Added GitLab CI

.github/workflows/unit-tests.yaml

-name: Unit tests for source files
-on: [push]
-
-
-jobs:
-
-  test:
-    runs-on: ubuntu-latest
-    steps:
-
-      - name: Checkout repository
-        uses: actions/checkout@v3
-        with:
-          submodules: recursive
-
-      - name: Install required packages
-        run: sudo $GITHUB_WORKSPACE/.ci_scripts/install_packages.sh
-
-      - name: Build project with CMake
-        run: $GITHUB_WORKSPACE/.ci_scripts/build.sh -C $GITHUB_WORKSPACE
-
-      - name: Run CUnit tests
-        run: $GITHUB_WORKSPACE/.ci_scripts/run_tests.sh
-
-      - name: Run Valgrind on CUnit tests
-        run: $GITHUB_WORKSPACE/.ci_scripts/run_tests.sh valgrind
-
-      - name: Run cppcheck on source files
-        run: $GITHUB_WORKSPACE/.ci_scripts/run_cppcheck.sh

.gitlab-ci.yml

+variables:
+  GIT_SUBMODULE_STRATEGY: recursive
+
+
+test-job:
+  script:
+    - sudo .ci_scripts/install_packages.sh  # Install required packages
+    - .ci_scripts/build.sh                  # Build project with CMake
+    - .ci_scripts/run_tests.sh              # Run CUnit tests
+    - .ci_scripts/run_tests.sh valgrind     # Run Valgrind on CUnit tests
+    - .ci_scripts/run_cppcheck.sh           # Run cppcheck on source files