ci: mock server test workflow

Author: joe-p

.github/workflows/test_mock_server.yml

@@ -0,0 +1,27 @@
+name: Test Mock Server
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+      
+      - name: Install dependencies
+        working-directory: ./resources/mock-server
+        run: bun install
+      
+      - name: Run tests
+        working-directory: ./resources/mock-server
+        run: bun run test