v1.3.0

The changes made by @talatkuyuk:

• Add unified into peerDependencies
• Update dependencies and devDependencies
• Migrate from jest to vitest v3.2
• Migrate eslint v8 to v9 and apply flat config
• Update .prettierrc
• Add .editorconfig file
• Update github actions
• Add rehype-format in test files
• Fix eslint errors
• Fix package-lock.json
• Update the copyright date in the LICENSE
• Update keywords in package.json
• Update README.md
  • Update badges/links
  • Chore corrections
  • Remove keywords
  • Add plugins which I recently developed into list