build: replace tsup with tsdown workspace

[Moshyfawn]

Description

• Replace tsup with tsdown across all packages
• Add a shared build config
• Unlock parallel builds of all packages: around 4x build speed improvement: went from 13s to 3s on an M3 Mac.
• Run built-in publint, attw, and unused checks
• Add root tsdown dependency using yarn's workspace resolution
• Remove tsup, rimraf, glob, and per-package publint dependencies

[changeset-bot]

⚠️ No Changeset found

Latest commit: 89ce455

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.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

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

[Moshyfawn]

I noticed some of the Hono core packages use tsdown which I've also adopted for my own projects, gaining a substantial boost in both build times and ease of package management. I decided to give Hono Vite plugins tsdown migration a try for the same reason I now always pick tsdown 😊

[yusukebe]

LGTM!

[yusukebe]

@Moshyfawn

Unlock parallel builds of all packages: around 4x build speed improvement: went from 13s to 3s on an M3 Mac.

Amazing! You are done well.

I updated some by myself, and it looks good. Let's go with this.

[dario-piotrowicz]

Note: here the ./cloudflare export has been updated to ./adapter/cloudflare