fix: add package-data to include templates and verify in CI

.gitea/workflows/ci.yml

@@ -71,7 +71,13 @@ jobs:
         run: |
           python -m build
 
+      - name: Verify wheel contents
+        run: |
+          unzip -l dist/*.whl | grep templates
+
       - name: Verify installation
         run: |
-          pip install dist/gitignore_generator-1.0.0-py3-none-any.whl
+          pip install dist/*.whl
           python -c "import gitignore_generator; print('Package imported successfully')"
+          python -c "from gitignore_generator.template_loader import template_loader; print('Template loader imported successfully')"
+          python -c "from gitignore_generator.cli import main; print('CLI imported successfully')"