Add hide menu option on mac (#969)

* Add hide menu option on mac

* Add hide others menu option on mac

* Add show all menu option on mac

Author: lekterable

packages/graphql-playground-electron/src/main/menu.ts

@@ -39,6 +39,21 @@ export const buildTemplate = (
         click: () => send('Tab', 'Settings'),
       },
       { type: 'separator' },
+      {
+        label: 'Hide GraphQL Playground',
+        accelerator: 'Cmd+H',
+        role: 'hide',
+      },
+      {
+        label: 'Hide Others',
+        accelerator: 'Option+Cmd+H',
+        role: 'hideOthers',
+      },
+      {
+        label: 'Show All',
+        role: 'unhide',
+      },
+      { type: 'separator', visible: process.platform === 'darwin' },
       {
         label: 'Quit',
         accelerator: 'CmdOrCtrl+Q',