Hotkey for toggle editor fullscreen

lib/main-menu.js

@@ -267,6 +267,19 @@ const view = {
         mainWindow.setFullScreen(!mainWindow.isFullScreen())
       }
     },
+    {
+      type: 'separator'
+    },
+    {
+      label: 'Toggle Side Bar',
+      accelerator: 'CommandOrControl+B',
+      click () {
+        mainWindow.webContents.send('editor:fullscreen')
+      }
+    },
+    {
+      type: 'separator'
+    },
     {
       role: 'zoomin',
       accelerator: macOS ? 'CommandOrControl+Plus' : 'Control+='