v0.5.0 – Clownfischserver HomeIP Auto-Update: myfritz Automatik für SSH (5-Min Cron)

Features:
- install.sh: Frage in Step 4 ob myfritz-Adresse für Auto-SSH-Freigabe genutzt werden soll
- clownfischserver-homeip-updater.sh: DNS-Auflösung + UFW-Update (alle 5 Min via Cron)
- .env-Variable: CLOWNFISCHSERVER_HOME_IP_DOMAIN für myfritz-Adresse
- State-File tracking zur Vermeidung unnötiger UFW-Updates
- Logging: /var/log/clownfischserver-homeip.log
- Dokumentation: scripts/README-HOMEIP.md + CLOWNFISCHSERVER.md update

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

LICENSE

@@ -0,0 +1,17 @@
+GNU GENERAL PUBLIC LICENSE
+Version 3, 29 June 2007
+
+Copyright (C) 2025-2026 Clownfischserver Contributors
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <https://www.gnu.org/licenses/>.