chore: replace tar-fs with modern-tar

[sacrosanctic]

Closes #

Description

should be a dropin replacement

Checklist

• Update snapshots (if applicable)
• Add a changeset (if applicable)
• Allow maintainers to edit this PR
• I care about what I'm doing, no matter the tool I use (Notepad, Sublime, VSCode, AI...)

[pkg-svelte-dev]

Install the latest version of sv from f66b830:

pnpm add https://pkg.svelte.dev/sv/c/f66b830c76c3af7474484c870e79d7f2d39e732c

Open in pkg.svelte.dev: https://pkg.svelte.dev/repos/cli/pr/1209

Note

This PR is from a fork. A maintainer must approve approve each commit before it can be built and installed.

[changeset-bot]

🦋 Changeset detected

Latest commit: f66b830

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
sv	Patch

Not sure what this means? Click here to learn what changesets are.

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

[AdrianGonz97]

We're missing a changeset for this, but aside from that, everything looks good!

[Conduitry]

I don't think we really need a changeset, unless we're worried it's not actually a drop-in replacement and mentioning this in the changelog will make people waste less time scratching their heads over why stuff is breaking.

[AdrianGonz97]

hmmm, unless I'm blind, their README doesn't explicitly say that it's a drop-in replacement for tar-fs. In that case, I think adding a changeset should be fine just in case issues do crop up.