add tests to pipeline

.gitlab-ci.yml

@@ -2,6 +2,7 @@ image: cirrusci/flutter:3.7.5
 
 stages:
   - analyze
+  - test
 
 before_script:
   - flutter pub get
@@ -13,3 +14,10 @@ analyze:
     - flutter analyze
   only:
     - merge_requests
+
+test:
+  stage: test
+  script:
+    - flutter test
+  only:
+    - merge_requests