Update GitHub Actions workflow to test all tools

Changed the workflow from testing only locust-compare to testing all tools
in the repository using a matrix strategy.

Changes:
- Added matrix strategy with all tools: locust-compare, config-utils
- Set fail-fast: false to ensure all tools are tested even if one fails
- Updated step names to be dynamic based on matrix.tool
- Both tools now run tests in parallel as separate jobs

This ensures comprehensive testing across the entire repository.

Author: claude

.github/workflows/test.yml

@@ -9,6 +9,12 @@ on:
 jobs:
   test:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        tool:
+          - locust-compare
+          - config-utils
+      fail-fast: false
     steps:
     - uses: actions/checkout@v4
 
@@ -17,9 +23,10 @@ jobs:
       with:
         python-version: 3.12
 
-    - name: Install and test locust-compare
-      working-directory: tools/locust-compare
+    - name: Install and test ${{ matrix.tool }}
+      working-directory: tools/${{ matrix.tool }}
       run: |
         python -m pip install --upgrade pip
         pip install -e .[dev]
-        pytest
+        python -m pytest -v
+