add unit tests

codemagic.yaml

@@ -42,4 +42,24 @@ workflows:
           cd ..
           flutter emulators --launch apple_ios_simulator
           flutter test integration_test/functionality_test.dart
+  unit-tests:
+    triggering:
+      events:
+        - pull_request
+      cancel_previous_builds: true
+    environment:
+      flutter: 3.19.5
+      xcode: 15.4
+      cocoapods: 1.15.2  
+    cache:
+      cache_paths:
+        - $FLUTTER_ROOT/.pub-cache
+    scripts:
+      - name: analyze flutter
+        script: |
+          flutter pub get
+          flutter analyze
+      - name: run ios integration tests on example folder
+        script: |
+          flutter test