chore: remove esbuild from deps and switch to tinyglobby

[benmccann]

closes #268 and closes #264 by switching to esbuild

also switched to tinyglobby as the whole vite and svelte ecosystems have made that move, so switching allows for better dependency deduping

added the packageManager field so that I could run pnpm since this project is on an older version

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[kaisermann]

@benmccann thanks, I'm gonna review this in a minute 🙏🏻

[Choochmeque]

@kaisermann, any updates on this PR?

[DominicSaladin]

@kaisermann Any update? :)