chore: add formatter

[marcalexiei]

• First part of Tooling & typecheck #99

---

• Add oxfmt as formatter
• Apply format to source code
• Add format:check script run on ci.yml

[vercel]

@marcalexiei is attempting to deploy a commit to the Changesets Team on Vercel.

A member of the Team first needs to authorize it.

[Andarist]

@marcalexiei could you rebase this now? Let's see if the CI checks actually work now :p

[marcalexiei]

could you rebase this now?

Done, this PR is now in sync with master

---

Let's see if the CI checks actually work now :p

Everything works as expected!
I saw few warnings in the PR CI run and I've created separate threads to discuss them.

[marcalexiei]

> warning " > vitest@4.1.2" has incorrect peer dependency "vite@^6.0.0 || ^7.0.0 || ^8.0.0".

Likely caused by

bot/package.json

Lines 39 to 41 in be84759

	"resolutions": {
	"vite": "npm:vite@8.0.0-beta.18"
	},

Can we install vite latest version (8.0.3) to remove it or there is a particular reason to use this beta?

[marcalexiei]

> warning "vite > rolldown > @rolldown/binding-wasm32-wasi > @napi-rs/wasm-runtime@1.1.2" has unmet peer dependency "@emnapi/core@^1.7.1".
> warning "vite > rolldown > @rolldown/binding-wasm32-wasi > @napi-rs/wasm-runtime@1.1.2" has unmet peer dependency "@emnapi/runtime@^1.7.1".

I don’t believe these warnings are an issue, since we’re only using vite indirectly via vitest, and the tests are running without problems.

If we want to eliminate the warnings, we could install the missing peer dependencies.