Add Valgrind to CI-job to search for possible memory-leaks

Author: Pulsar7

.github/workflows/ci.yaml

@@ -19,3 +19,9 @@ jobs:
 
       - name: Build and run tests
         run: make test
+      
+      - name: Run Valgrind to search for memory leaks
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y valgrind
+          valgrind --leak-check=full --error-exitcode=1 ./build/bin/test_runner