Oxlint support: ESLint as optional peer dep for eslint-plugin-router

[dotnize]

Oxlint already supports many ESLint plugins, including @tanstack/eslint-plugin-router, albeit with this minor issue oxc-project/oxc#14557 which has a simple workaround.

@tanstack/eslint-plugin-router has ESLint as a peer dependency, and package managers like pnpm automatically install peer dependencies by default. Can we have ESLint marked as an optional peer dependency instead so it won't get auto installed for projects that don't use ESLint?

related discussion for @tanstack/eslint-plugin-query: TanStack/query#10154

[schiller-manuel]

create a PR!

[dotnize]

I tried with #6710, but from CodeRabbit's comment, I tested it myself and yes, ESLint still gets installed because of @typescript-eslint/utils, which also has ESLint as a peer dep.

This isn't a big deal anyway and doesn't block us from using Oxlint. It still works perfect otherwise. So I guess we can just wait for upstream or the eslint ecosystem before revisiting this. Thanks!