Add GCC problem matcher to CI

(cherry picked from commit d3641c9d0d6f2eb96391e5249d6dc21c4baa3417)

.github/workflows/linux_builds.yml

@@ -71,6 +71,9 @@ jobs:
       - name: Setup python and scons
         uses: ./.github/actions/godot-deps
 
+      - name: Setup GCC problem matcher
+        uses: ammaraskar/gcc-problem-matcher@master
+
       - name: Compilation
         uses: ./.github/actions/godot-build
         with: