Initial files for MakeCode project

.github/workflows/cfg-check.yml

@@ -0,0 +1,37 @@
+name: Check pxt.json
+
+on:
+  push:
+    branches:
+      - 'master'
+      - 'main'
+
+jobs:
+  check-cfg:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [14.x]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: npm install
+        run: |
+          npm install -g pxt
+          pxt target arcade
+      - name: Checkout current state
+        run: |
+          git checkout -- .
+          git clean -fd
+      - name: Fix files listed in config if necessary
+        run: pxt checkpkgcfg
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v3
+        continue-on-error: true
+        with:
+          title: 'Removing missing files from pxt.json'
+          commit-message: 'Removing missing files from pxt.json'
+          delete-branch: true