Group selected nodes by Ctrl + g (#663)

* Ctrl + g to group selected noes

* Add playwright test

* nit

* Move button loc

* Update test expectations [skip ci]

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Co-authored-by: github-actions <github-actions@github.com>

browser_tests/interaction.spec.ts

@@ -158,6 +158,16 @@ test.describe('Node Interaction', () => {
     })
     expect(await comfyPage.page.locator('.node-title-editor').count()).toBe(0)
   })
+
+  test('Can group selected nodes', async ({ comfyPage }) => {
+    await comfyPage.setSetting('Comfy.GroupSelectedNodes.Padding', 10)
+    await comfyPage.select2Nodes()
+    await comfyPage.page.keyboard.down('Control')
+    await comfyPage.page.keyboard.press('KeyG')
+    await comfyPage.page.keyboard.up('Control')
+    await comfyPage.nextFrame()
+    await expect(comfyPage.canvas).toHaveScreenshot('group-selected-nodes.png')
+  })
 })
 
 test.describe('Canvas Interaction', () => {