Add comprehensive testing framework, performance monitoring, and plugin system

- Add complete pytest testing framework with conftest.py and test files
- Add performance monitoring and benchmarking capabilities
- Add plugin system with ccache plugin example
- Add comprehensive documentation (API, deployment, testing, etc.)
- Add Docker API wrapper for service deployment
- Add advanced configuration examples
- Remove old wget package file
- Update core modules with enhanced functionality

pytest.ini

@@ -0,0 +1,24 @@
+[tool:pytest]
+testpaths = tests
+python_files = test_*.py
+python_classes = Test*
+python_functions = test_*
+addopts = 
+    -v
+    --tb=short
+    --strict-markers
+    --disable-warnings
+    --cov=deb_mock
+    --cov-report=term-missing
+    --cov-report=html:htmlcov
+    --cov-report=xml:coverage.xml
+    --cov-fail-under=80
+markers =
+    slow: marks tests as slow (deselect with '-m "not slow"')
+    integration: marks tests as integration tests
+    unit: marks tests as unit tests
+    performance: marks tests as performance tests
+    plugin: marks tests as plugin system tests
+filterwarnings =
+    ignore::DeprecationWarning
+    ignore::PendingDeprecationWarning