Add Github related extensions in devcontainer (#25800)

.devcontainer/devcontainer.json

@@ -23,7 +23,8 @@
         "Vue.volar",
         "ms-azuretools.vscode-docker",
         "zixuanchen.vitest-explorer",
-        "qwtel.sqlite-viewer"
+        "qwtel.sqlite-viewer",
+        "GitHub.vscode-pull-request-github"
       ]
     }
   },

.gitpod.yml

@@ -35,6 +35,7 @@ vscode:
     - ms-azuretools.vscode-docker
     - zixuanchen.vitest-explorer
     - qwtel.sqlite-viewer
+    - GitHub.vscode-pull-request-github
 
 ports:
   - name: Gitea