Add WAMR-IDE vscode extension to the Visual Studio Marketplace (#1868)

Publish an extension to the visual studio marketplace using a secret token.
This allows for automation to take place because downloading and installing
the extension is a manual process so it'd be simpler if the extension was
published automatically through the visual studio marketplace.

.github/workflows/build_wamr_vscode_ext.yml

@@ -32,11 +32,14 @@ jobs:
         working-directory: test-tools/wamr-ide/VSCode-Extension
 
       - name: generate wamr ide vscode extension
+        env: 
+          credentials: ${{ secrets.TOKEN }}
         run: |
           npm install -g vsce
           rm -rf node_modules
           npm install
           vsce package
+          vsce publish -p ${{ secrets.TOKEN }}
         working-directory: test-tools/wamr-ide/VSCode-Extension
 
       - name: compress the vscode extension