feat: import.meta.filename and import.meta.dirname (#22061)

This commit adds `import.meta.filename` and `import.meta.dirname` APIs.

These APIs return string representation of filename and containing
dirname.
They are only defined for local modules (modules that have `file:///`
scheme).

Example:

```ts
console.log(import.meta.filename, import.meta.dirname)
```

Unix:
```
$ deno run /dev/my_module.ts
/dev/my_module.ts /dev/
```

Windows:
```
$ deno run C:\dev\my_module.ts
C:\dev\my_module.ts C:\
```

1 files changed, 30 insertions, 0 deletions

diff --git a/cli/tsc/dts/lib.deno.ns.d.ts b/cli/tsc/dts/lib.deno.ns.d.ts
index 8d1e28d4b..483c5c3d0 100644
--- a/cli/tsc/dts/lib.deno.ns.d.ts
+++ b/cli/tsc/dts/lib.deno.ns.d.ts
@@ -28,6 +28,36 @@ declare interface ImportMeta {
    */
   url: string;
 
+  /** The absolute path of the current module.
+   *
+   * This property is only provided for local modules (ie. using `file://` URLs).
+   *
+   * Example:
+   * ```
+   * // Unix
+   * console.log(import.meta.filename); // /home/alice/my_module.ts
+   *
+   * // Windows
+   * console.log(import.meta.filename); // C:\alice\my_module.ts
+   * ```
+   */
+  filename?: string;
+
+  /** The absolute path of the dirrectory containing the current module.
+   *
+   * This property is only provided for local modules (ie. using `file://` URLs).
+   *
+   * * Example:
+   * ```
+   * // Unix
+   * console.log(import.meta.dirname); // /home/alice/
+   *
+   * // Windows
+   * console.log(import.meta.dirname); // C:\alice\
+   * ```
+   */
+  dirname?: string;
+
   /** A flag that indicates if the current module is the main module that was
    * called when starting the program under Deno.
    *