chore: Setup example app(iOS) to run react-native-owl on GitHub Actions

.github/workflows/demo-app.yml

@@ -0,0 +1,70 @@
+name: Demo App
+
+on: [pull_request]
+
+jobs:
+  run-visual-regression-ios:
+    runs-on: macos-11
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Get Runner Information
+        run: /usr/bin/xcodebuild -version
+
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+
+      - uses: actions/cache@v2
+        id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
+
+      - name: Install Dependencies (Library)
+        run: yarn install --frozen-lockfile
+        working-directory: ./
+
+      - name: Compile the library
+        run: yarn build
+        working-directory: ./
+
+      - name: Install Dependencies (Example App)
+        run: yarn install --frozen-lockfile
+        working-directory: ./example
+
+      - name: Install CocoaPods
+        run: gem install cocoapods -v 1.11.0
+
+      - uses: actions/cache@v2
+        with:
+          path: ./example/ios/Pods
+          key: ${{ runner.os }}-pods-${{ hashFiles('**/Podfile.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-pods-
+
+      - name: Install CocoaPods
+        run: pod install
+        working-directory: ./example/ios
+
+      - uses: futureware-tech/simulator-action@v1
+        with:
+          model: 'iPhone 12 Pro'
+          os_version: '=14.5'
+
+      - name: Run Owl Build
+        run: yarn owl:build:ios
+        working-directory: ./example
+
+      - name: Run Owl Test
+        run: yarn owl:test:ios
+        working-directory: ./example
+
+      - name: Store screenshots as artifacts
+        uses: actions/upload-artifact@v2
+        with:
+          name: owl-screenshots
+          path: example/.owl

example/owl.config.json

@@ -3,7 +3,7 @@
     "workspace": "ios/OwlDemo.xcworkspace",
     "scheme": "OwlDemo",
     "configuration": "Release",
-    "device": "iPhone 13 Pro",
+    "device": "iPhone 12 Pro",
     "quiet": true
   },
   "android": {