message: Add ctrl+alt+j keybinding for synctex
  This closes
diff: "command": "latex-workshop.view",
  "key": "ctrl+alt+v",
  "when": "editorTextFocus"
  + },
  + {
  + "command": "latex-workshop.synctex",
  + "key": "ctrl+alt+j",
  + "when": "editorTextFocus"
  }
  ],
  "configuration": {
  