Create pack.yml

.github/workflows/pack.yml

@@ -0,0 +1,23 @@
+name: Build Pack
+on:
+  push:
+    branches:
+      - master 
+jobs:
+  pack: 
+    runs-on: ${{matrix.os}}
+    strategy:
+      matrix:
+        os: [ windows-latest, macOS-latest] 
+    steps:
+    - uses: actions/checkout@v2 
+    - name: Install and Pack 
+      run: |
+        npm install
+        npm run pack
+    - name: Upload file
+      uses: actions/upload-artifact@v2
+      with:
+        name: packs
+        path: |
+          *