[Feature] Cleanup repository structure

[krzysztofzuraw]

AC

• canary branch is for new MacawUI development and don't have any references to legacy code
• main branch is for legacy MacawUI and keep for now to be backwards compatible
• Projects that use MacawUI will alias legacy MacawUI and new MacawUI on their end

Tasks

Preview Give feedback

1. Remove legacy folder
2. Remove not needed exports in pkg.json
3. Test exports in https://arethetypeswrong.github.io/
4. Check if there are changes that need to be ported into legacy MacawUI
5. Release new version from branch and check with dashboard if it is working