feat: add get_route_to() via ip route show; family-Feld für IPv4/IPv6

Initial commit mit bestehendem Code inkl. neuem get_route_to():
- Parsed ip -4 route show und ip -6 route show
- Protokoll-Map: kernel/dhcp/ra/boot→connected, static→static, ospf→ospf, bgp→bgp
- family-Feld aus Netzadresse oder Next-Hop (: = ipv6)
- default/default6 → 0.0.0.0/0 / ::/0; Host-Routen ohne Prefix bekommen /32

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,44 @@
+# Python
+__pycache__/
+*.py[cod]
+*.pyo
+*.pyd
+*.so
+*.egg
+*.egg-info/
+dist/
+build/
+.eggs/
+wheels/
+
+# Virtual environments
+.venv/
+venv/
+env/
+.env
+
+# Packaging
+*.tar.gz
+*.whl
+MANIFEST
+
+# Testing
+.pytest_cache/
+.coverage
+.coverage.*
+htmlcov/
+coverage.xml
+
+# Type checking
+.mypy_cache/
+.ruff_cache/
+
+# IDEs
+.vscode/
+.idea/
+*.swp
+*~
+
+# OS
+.DS_Store
+Thumbs.db