fix(lsp): make spec complient JSON-RPC response and properly implement definition link suport#2392

Kara-Zor-El wants to merge 4 commits intograin-lang:maingrain-lang/grain:mainfrom

Kara-Zor-El:Kara-Zor-El/lsp-fixKara-Zor-El/grain:Kara-Zor-El/lsp-fixCopy head branch name to clipboard