[Proposal] Document differences between Volar and Vetur

[ddahan]

I think it's currently difficult to someone to actually understand the differences between Volar. It could be great to have somewhere clear answers to these questions, in the Readme page:

• What's the main differences in features between 2 projects?
• In which case Volar is better than Vetur, and vice versa?
• Which one was first to be born, and why a second project?
• Why both projects can not be merged to double the collaboration and avoid unnecessary split?
• ...

What do you think?

[johnsoncodehk]

Actually I'm not sure how I should talk about this topic, and even some important points may have been forgotten because of the long time.

Can you reopen it in https://github.com/johnsoncodehk/volar-land/discussions? I will try to answer.

[ddahan]

Done: https://github.com/johnsoncodehk/volar-land/discussions/2