ci(github): add workflow to generate screenshots

.github/workflows/screenshots.yml

@@ -0,0 +1,21 @@
+name: Screenshots
+on: [push]
+jobs:
+  setup:
+    name: Build App
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Dependencies
+        run: npm install
+      - name: Generate Optimized Images
+        run: npm run generate:images
+      - name: Build
+        run: npm run build:ionic:browser
+      - name: Generate Screenshots
+        run: npm run generate:screenshots
+      - name: Upload Build Artifact
+        uses: actions/upload-artifact@v2
+        with:
+          name: screenshots
+          path: dist

package.json

@@ -9,7 +9,7 @@
   "scripts": {
     "generate:images": "node scripts/images/squoosh.js",
     "generate:release": "semantic-release",
-    "generate:screenshots": "",
+    "generate:screenshots": "npx jest --config ./jest.config.js",
     "generate:resources": "node scripts/resources.js",
     "generate:resources:assets": "npm run generate:resources:assets:android && npm run generate:resources:assets:ios && npm run generate:resources:assets:pwa",
     "generate:resources:assets:android": "node scripts/resources/assets-android.js",