Add VS Code VSCE Action

.github/workflows/main.yml

@@ -0,0 +1,16 @@
+on:
+  push:
+    branches:
+      - main
+name: Deploy Extension
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: npm install
+      - uses: lannonbr/vsce-action@master
+        with:
+          args: "publish -p $VSCE_TOKEN"
+        env:
+          VSCE_TOKEN: ${{ secrets.VSCE_TOKEN }}