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, 1 insertions, 1 deletions

diff --git a/tests/testdata/run/error_015_dynamic_import_permissions.js b/tests/testdata/run/error_015_dynamic_import_permissions.js
index 47961cf63..bdf423b59 100644
--- a/tests/testdata/run/error_015_dynamic_import_permissions.js
+++ b/tests/testdata/run/error_015_dynamic_import_permissions.js
@@ -1,3 +1,3 @@
 (async () => {
-  await import("" + "http://localhost:4545/subdir/mod4.js");
+  await import("" + "http://example.com/subdir/mod4.js");
 })();