adds bundle GH action

Add a GitHub action to bundle the sds-ui-bundle and upload it as artifact.

Author: eriksven

.github/workflows/build-artifact.yaml

@@ -0,0 +1,27 @@
+name: Build UI Bundle Zip File
+on:
+  pull_request:
+    branches: [ main ]
+  workflow_dispatch:
+      
+jobs:
+  build-ui-bundle:
+    runs-on: ubuntu-20.04
+    steps:
+    - name: Checkout
+      uses: actions/[email protected]
+    - name: Set up Node
+      uses: actions/[email protected]
+      with:
+        node-version : '15'
+    - name: Install gulp
+      run: npm install -g gulp-cli
+    - name: Install dependencies
+      run: npm install
+    - name: Build UI bundle
+      run: gulp bundle
+    - name: Upload UI bundle
+      uses: actions/upload-artifact@v2
+      with:
+        name: sds-ui-bundle.zip
+        path: build/