Update Volar (Vue Language Tools) to v3.0.0

[tsukkee]

There are 2 breaking changes according to the upgrade guide ¹.

• TypeScript Language Server and Vue Language Server now communicate on LSP protocol, previously they did it on named pipes, so I added some code to do that by follwoing Neovim example ²
  • And, now only vtsls is supported becuase typescript-language-server doesn't support this communication method right now
• typescript.tsdk option has dropped so I just removed it.

Footnotes

1. https://github.com/vuejs/language-tools/discussions/5456 ↩

2. https://github.com/vuejs/language-tools/wiki/Neovim ↩

[mattn]

Thank you