Remove unused code in internal scripts

[bluwy]

Changes

• Remove stats code as it doesn't seem to be used anymore. We can walk through the git history if we need it again.
• Replace tiny-glob with fast-glob as that's what we use elsewhere
• Remove del with fast-glob + fs.rm (works the same)
• Remove svelte and tar handling. It doesn't seem like we rely on them anymore
• Remove astro-scripts copy as it's not used anymore, it isn't copying anything except .wasm files, but we already handle that with astro-scripts dev/build --copy-wasm
• Format /scripts/** with Biome (not .github/scripts yet)

Testing

Ran all the scripts manually, and the CI should pass

Docs

n/a

[changeset-bot]

⚠️ No Changeset found

Latest commit: 839fa87

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[bluwy]

Looks like I need to fix the windows e2e fail first before merging