Merge with downstream

[Zolyn]

Features

• (semi-stable): support extended interfaces
• Determine the type of enums and convert it to types like type [name] = string | number
• Support scanning types in SFCs, which means we can import types and extend it in SFCs
• (WIP): More logic for resolving file paths, related to import types from external packages

Bug fixes

• Inline types multiple times, closes #6

Performance optimization

• Use fs.readFileSync instead of fsPromises.readFile (Not sure if this change will work for everyone, but it takes too much time on my machine to read files)

Build

• Reuse code wherever possible
• Enable code-splitting
• Reduce bundle size (Don't bundle dependencies)
• Do not emit declaration files in development
• Clean console.log in production
• Add prettier to format files (I respect anyone's code style. I will revert the files changed by prettier if this is not necessary)

Docs

• More detailed documentation

Feel free to share your opinion!

[wheatjs]

This looks great, I'll give it a full review tomorrow! Amazing work!

[wheatjs]

Sorry finally got around to reviewing. I have some adjustments I'd like to make, but I'll make those before I publish a new version this week! Thanks for all your hard work!