Add UI tests for iOS to github actions

Author: michallaskowski

.github/workflows/continuous-integration-workflow.yml

@@ -57,4 +57,6 @@ jobs:
       - name: Boot simulator
         run: xcrun simctl boot "iPhone 8"
       - name: Tests
-        run: ./gradlew library:iosTest
+        run: ./gradlew library:iosTest
+      - name: UI tests
+        run: xcodebuild test -project sample-ios/SampleiOS.xcodeproj -scheme SampleiOS -destination "name=iPhone 8" -testPlan UITest