message: Fix Add `frame` completion in commands
diff: "snippet":"left\\{${1}\\right\\\\}${0}",
  "detail":"\\left\\{ ... \\right\\}"
  },
  + "frame": {
  + "command": "frame",
  + "snippet": "begin{frame}{$1}\n\t$0\n\\\\end{frame}",
  + "description": "input a frame"
  + },
  "latexinlinemath":{
  "command":"(",
  "snippet":"(${1}\\)${0}",
  