Separate clang-format test into its own workflow (#283)

* Rework workflow dependencies

.github/workflows/clang_format_ci_workflow.yml

@@ -0,0 +1,33 @@
+name: Run Clang Format Test
+
+on:
+  workflow_dispatch:
+  workflow_call:
+
+jobs:
+  run-test:
+    name: Verify code formatting
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install clang-format
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y clang-format
+      - name: Checkout repository
+        uses: actions/checkout@v5
+
+      - name: Run clang-format
+        run: >
+          clang-format --dry-run -Werror
+          include/bitset.h source/bitset.c
+          include/pool.h source/pool.c
+          include/card.h source/card.c 
+          include/game.h source/game.c 
+          include/hand_analysis.h source/hand_analysis.c 
+          include/list.h source/list.c
+          include/sprite.h source/sprite.c 
+          include/splash_screen.h source/splash_screen.c 
+          include/blind.h source/blind.c
+        # Currently contains only the code that has been formatted to conform
+        # When all existing code conforms, change to this:
+        # run: clang-format --dry-run -Werror include/*.h source/*.c