fix(types): support typed loader options

[ityuany]

Summary

• parameterize Rule.use and Use with the concrete loader options type
• keep string loader options supported while allowing type-safe options and tap callbacks
• add SWC and string options type coverage plus documentation

Testing

• pnpm test:types
• pnpm lint
• pnpm exec prettier --check README.md types/index.d.ts types/test/rspack-chain-tests.ts
• git diff --check