bump version, add a publish github action (hopefully)

.github/workflows/publish.yml

@@ -0,0 +1,17 @@
+on:
+  push:
+    branches:
+      - release
+
+name: Publish Extension
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: npm install
+      - uses: nyanotech/vsce-action@3.0.0
+        with:
+          args: "publish -p $VSCE_TOKEN"
+        env:
+          VSCE_TOKEN: ${{ secrets.VSCE_TOKEN }}