Add pytest configuration for optional pytest usage

Provides:
- pytest-django integration
- Test discovery patterns
- Output formatting options
- Coverage configuration
- Test markers for organization
- Ignore paths

pytest.ini

@@ -0,0 +1,60 @@
+[tool:pytest]
+# Pytest configuration for vgui-cicd project
+# To use pytest instead of Django's test runner:
+#   pip install pytest pytest-django
+#   pytest
+
+DJANGO_SETTINGS_MODULE = VorgabenUI.settings
+python_files = tests.py test_*.py *_tests.py
+python_classes = *TestCase *Test
+python_functions = test_*
+
+# Test discovery patterns
+testpaths = 
+    abschnitte
+    diagramm_proxy
+    standards
+    stichworte
+    referenzen
+    rollen
+    pages
+
+# Output options
+addopts = 
+    --verbose
+    --strict-markers
+    --tb=short
+    --reuse-db
+    
+# Coverage options (when using pytest-cov)
+# Uncomment to enable:
+# --cov=.
+# --cov-report=html
+# --cov-report=term-missing
+
+# Markers for organizing tests
+markers =
+    slow: marks tests as slow (deselect with '-m "not slow"')
+    integration: marks tests as integration tests
+    unit: marks tests as unit tests
+    cache: marks tests related to caching
+    render: marks tests related to rendering
+    commands: marks tests related to management commands
+
+# Ignore paths
+norecursedirs = 
+    .git
+    .tox
+    dist
+    build
+    *.egg
+    __pycache__
+    static
+    staticfiles
+    media
+    data
+    venv
+    .venv
+
+# Django-specific settings
+django_find_project = false