message: add volar as recommended extension, remove vetur
diff: // See http://go.microsoft.com/fwlink/?LinkId=827846
  // for the documentation about the extensions.json format
  "recommendations": [
  - // Extension identifier format: ${publisher}.${name}. Example: vscode.csharp
  - "EditorConfig.editorconfig",
  + "editorconfig.editorconfig",
  "sysoev.language-stylus",
  "esbenp.prettier-vscode",
  "pmneo.tsimporter",
  - "octref.vetur",
  "thisismanta.stylus-supremacy",
  "rebornix.project-snippets",
  - "dbaeumer.vscode-eslint"
  + "dbaeumer.vscode-eslint",
  + "johnsoncodehk.volar"
  ]
  }
  