fix: eslint-parser-plain meta data

[Garfield550]

Description

This pull request includes several dependency updates and a minor code refactor. The most important changes are the version updates for eslint-parser-plain, @babel packages, and magic-string, along with a TypeScript interface addition and refactor in src/index.ts.

Dependency updates:

• package.json: Updated eslint-parser-plain to version 0.1.1.
• pnpm-lock.yaml: Updated versions for eslint-parser-plain, @babel/helper-string-parser, @babel/helper-validator-identifier, @babel/parser, @babel/types, and magic-string.

Code refactor:

• src/index.ts: Added ESLintPluginFormat interface and refactored the parserPlain import and export to use this interface.

Linked Issues

Additional context

pnpm exec eslint --print-config ./examples/style.css

{
  "languageOptions": {
    "parser": "[email protected]"
    // ...
  }
}