refactor(core): include_js_files! 'dir' option doesn't change specifiers (#18019)

This commit changes "include_js_files!" macro from "deno_core"
in a way that "dir" option doesn't cause specifiers to be rewritten 
to include it.

Example:
```
include_js_files! {
  dir "js",
  "hello.js",
}
```

The above definition required embedders to use:
`import ... from "internal:<ext_name>/js/hello.js"`. 
But with this change, the "js" directory in which the files are stored
is an implementation detail, which for embedders results in: 
`import ... from "internal:<ext_name>/hello.js"`.

The directory the files are stored in, is an implementation detail and 
in some cases might result in a significant size difference for the 
snapshot. As an example, in "deno_node" extension, we store the 
source code in "polyfills" directory; which resulted in each specifier 
to look like "internal:deno_node/polyfills/<module_name>", but with 
this change it's "internal:deno_node/<module_name>". 

Given that "deno_node" has over 100 files, many of them having 
several import specifiers to the same extension, this change removes
10 characters from each import specifier.

7 files changed, 26 insertions, 32 deletions

diff --git a/ext/node/polyfills/path/_util.ts b/ext/node/polyfills/path/_util.ts
index ccc12abc9..1ba139924 100644
--- a/ext/node/polyfills/path/_util.ts
+++ b/ext/node/polyfills/path/_util.ts
@@ -2,7 +2,7 @@
 // Ported from https://github.com/browserify/path-browserify/
 // Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
 
-import type { FormatInputPathObject } from "internal:deno_node/polyfills/path/_interface.ts";
+import type { FormatInputPathObject } from "internal:deno_node/path/_interface.ts";
 import {
   CHAR_BACKWARD_SLASH,
   CHAR_DOT,
@@ -11,8 +11,8 @@ import {
   CHAR_LOWERCASE_Z,
   CHAR_UPPERCASE_A,
   CHAR_UPPERCASE_Z,
-} from "internal:deno_node/polyfills/path/_constants.ts";
-import { ERR_INVALID_ARG_TYPE } from "internal:deno_node/polyfills/internal/errors.ts";
+} from "internal:deno_node/path/_constants.ts";
+import { ERR_INVALID_ARG_TYPE } from "internal:deno_node/internal/errors.ts";
 
 export function assertPath(path: string) {
   if (typeof path !== "string") {
diff --git a/ext/node/polyfills/path/common.ts b/ext/node/polyfills/path/common.ts
index e4efe7cc4..f8dad209b 100644
--- a/ext/node/polyfills/path/common.ts
+++ b/ext/node/polyfills/path/common.ts
@@ -1,7 +1,7 @@
 // Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
 // This module is browser compatible.
 
-import { SEP } from "internal:deno_node/polyfills/path/separator.ts";
+import { SEP } from "internal:deno_node/path/separator.ts";
 
 /** Determines the common path from a set of paths, using an optional separator,
  * which defaults to the OS default separator.
diff --git a/ext/node/polyfills/path/glob.ts b/ext/node/polyfills/path/glob.ts
index c0da29b9f..00529eb3c 100644
--- a/ext/node/polyfills/path/glob.ts
+++ b/ext/node/polyfills/path/glob.ts
@@ -1,13 +1,10 @@
 // Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
 
-import { isWindows, osType } from "internal:deno_node/polyfills/_util/os.ts";
-import {
-  SEP,
-  SEP_PATTERN,
-} from "internal:deno_node/polyfills/path/separator.ts";
-import * as _win32 from "internal:deno_node/polyfills/path/win32.ts";
-import * as _posix from "internal:deno_node/polyfills/path/posix.ts";
-import type { OSType } from "internal:deno_node/polyfills/_util/os.ts";
+import { isWindows, osType } from "internal:deno_node/_util/os.ts";
+import { SEP, SEP_PATTERN } from "internal:deno_node/path/separator.ts";
+import * as _win32 from "internal:deno_node/path/win32.ts";
+import * as _posix from "internal:deno_node/path/posix.ts";
+import type { OSType } from "internal:deno_node/_util/os.ts";
 
 const path = isWindows ? _win32 : _posix;
 const { join, normalize } = path;
diff --git a/ext/node/polyfills/path/mod.ts b/ext/node/polyfills/path/mod.ts
index 4b4de056b..eaeeeed74 100644
--- a/ext/node/polyfills/path/mod.ts
+++ b/ext/node/polyfills/path/mod.ts
@@ -2,9 +2,9 @@
 // Ported mostly from https://github.com/browserify/path-browserify/
 // Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
 
-import { isWindows } from "internal:deno_node/polyfills/_util/os.ts";
-import _win32 from "internal:deno_node/polyfills/path/win32.ts";
-import _posix from "internal:deno_node/polyfills/path/posix.ts";
+import { isWindows } from "internal:deno_node/_util/os.ts";
+import _win32 from "internal:deno_node/path/win32.ts";
+import _posix from "internal:deno_node/path/posix.ts";
 
 const path = isWindows ? _win32 : _posix;
 
@@ -28,10 +28,7 @@ export const {
   toNamespacedPath,
 } = path;
 
-export * from "internal:deno_node/polyfills/path/common.ts";
-export {
-  SEP,
-  SEP_PATTERN,
-} from "internal:deno_node/polyfills/path/separator.ts";
-export * from "internal:deno_node/polyfills/path/_interface.ts";
-export * from "internal:deno_node/polyfills/path/glob.ts";
+export * from "internal:deno_node/path/common.ts";
+export { SEP, SEP_PATTERN } from "internal:deno_node/path/separator.ts";
+export * from "internal:deno_node/path/_interface.ts";
+export * from "internal:deno_node/path/glob.ts";
diff --git a/ext/node/polyfills/path/posix.ts b/ext/node/polyfills/path/posix.ts
index 8ebf64629..f6ff13b76 100644
--- a/ext/node/polyfills/path/posix.ts
+++ b/ext/node/polyfills/path/posix.ts
@@ -5,12 +5,12 @@
 import type {
   FormatInputPathObject,
   ParsedPath,
-} from "internal:deno_node/polyfills/path/_interface.ts";
+} from "internal:deno_node/path/_interface.ts";
 import {
   CHAR_DOT,
   CHAR_FORWARD_SLASH,
-} from "internal:deno_node/polyfills/path/_constants.ts";
-import { ERR_INVALID_ARG_TYPE } from "internal:deno_node/polyfills/internal/errors.ts";
+} from "internal:deno_node/path/_constants.ts";
+import { ERR_INVALID_ARG_TYPE } from "internal:deno_node/internal/errors.ts";
 
 import {
   _format,
@@ -18,7 +18,7 @@ import {
   encodeWhitespace,
   isPosixPathSeparator,
   normalizeString,
-} from "internal:deno_node/polyfills/path/_util.ts";
+} from "internal:deno_node/path/_util.ts";
 
 export const sep = "/";
 export const delimiter = ":";
diff --git a/ext/node/polyfills/path/separator.ts b/ext/node/polyfills/path/separator.ts
index 2cfde31d0..cf089db71 100644
--- a/ext/node/polyfills/path/separator.ts
+++ b/ext/node/polyfills/path/separator.ts
@@ -1,6 +1,6 @@
 // Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
 
-import { isWindows } from "internal:deno_node/polyfills/_util/os.ts";
+import { isWindows } from "internal:deno_node/_util/os.ts";
 
 export const SEP = isWindows ? "\\" : "/";
 export const SEP_PATTERN = isWindows ? /[\\/]+/ : /\/+/;
diff --git a/ext/node/polyfills/path/win32.ts b/ext/node/polyfills/path/win32.ts
index 4b30e3430..4ba3ad0f1 100644
--- a/ext/node/polyfills/path/win32.ts
+++ b/ext/node/polyfills/path/win32.ts
@@ -5,14 +5,14 @@
 import type {
   FormatInputPathObject,
   ParsedPath,
-} from "internal:deno_node/polyfills/path/_interface.ts";
+} from "internal:deno_node/path/_interface.ts";
 import {
   CHAR_BACKWARD_SLASH,
   CHAR_COLON,
   CHAR_DOT,
   CHAR_QUESTION_MARK,
-} from "internal:deno_node/polyfills/path/_constants.ts";
-import { ERR_INVALID_ARG_TYPE } from "internal:deno_node/polyfills/internal/errors.ts";
+} from "internal:deno_node/path/_constants.ts";
+import { ERR_INVALID_ARG_TYPE } from "internal:deno_node/internal/errors.ts";
 
 import {
   _format,
@@ -21,8 +21,8 @@ import {
   isPathSeparator,
   isWindowsDeviceRoot,
   normalizeString,
-} from "internal:deno_node/polyfills/path/_util.ts";
-import { assert } from "internal:deno_node/polyfills/_util/asserts.ts";
+} from "internal:deno_node/path/_util.ts";
+import { assert } from "internal:deno_node/_util/asserts.ts";
 
 export const sep = "\\";
 export const delimiter = ";";