feat: add `--allow-import` flag (#25469)

This replaces `--allow-net` for import permissions and makes the
security sandbox stricter by also checking permissions for statically
analyzable imports.

By default, this has a value of
`--allow-import=deno.land:443,jsr.io:443,esm.sh:443,raw.githubusercontent.com:443,gist.githubusercontent.com:443`,
but that can be overridden by providing a different set of hosts.

Additionally, when no value is provided, import permissions are inferred
from the CLI arguments so the following works because
`fresh.deno.dev:443` will be added to the list of allowed imports:

```ts
deno run -A -r https://fresh.deno.dev
```

---------

Co-authored-by: David Sherret <dsherret@gmail.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/tests/specs/permission/allow_import_main_module/__test__.jsonc b/tests/specs/permission/allow_import_main_module/__test__.jsonc
new file mode 100644
index 000000000..c0a92bfc3
--- /dev/null
+++ b/tests/specs/permission/allow_import_main_module/__test__.jsonc
@@ -0,0 +1,17 @@
+{
+  // won't need --allow-import because it's implied from the main module
+  "tests": {
+    "run": {
+      "args": "run http://localhost:4545/run/002_hello.ts",
+      "output": "Download http://localhost:4545/run/002_hello.ts\nHello World\n"
+    },
+    "cache": {
+      "args": "cache http://localhost:4545/run/002_hello.ts",
+      "output": "Download http://localhost:4545/run/002_hello.ts\n"
+    },
+    "check": {
+      "args": "check http://localhost:4545/run/002_hello.ts",
+      "output": "Download http://localhost:4545/run/002_hello.ts\nCheck http://localhost:4545/run/002_hello.ts\n"
+    }
+  }
+}