Added testing to CI/CD

.gitlab-ci.yml

 image: python:latest
 
 stages:
+  - test
   - build
   - deploy
 
+# Test stage
+run_tests:
+  stage: test
+  script:
+    - pip install -r requirements.txt  # Install dependencies, including test dependencies
+    - pip install pytest               # Install pytest (it is not n requirements.txt)
+    - pytest                           # Run the tests in the 'tests' directory
+  artifacts:
+    paths:
+      - tests/test-reports.xml
+  only:
+    - main 
+
 build_docs:
   stage: build
   script:
@@ -14,7 +28,7 @@ build_docs:
     paths:
       - docs/build/html
   only:
-    - main  # Adjust as necessary for your branch strategy
+    - main
 
 pages:
   stage: deploy
@@ -24,4 +38,4 @@ pages:
     paths:
       - public
   only:
-    - main  # Ensure this matches the branch you use for deployment
+    - main