feat(traefik): add TCP routing for Gitea SSH port 2222

- Add TCP entrypoint 'gitea-ssh' on port 2222 in static config
- Create TCP router configuration for routing SSH traffic to Gitea
- Use Gitea container IP (172.23.0.2) since Traefik runs in host network mode
- Routes git.michaelschiemer.de:2222 through Traefik instead of direct VPN access

deployment/stacks/traefik/traefik.yml

@@ -30,6 +30,10 @@ entryPoints:
             sans:
               - "*.michaelschiemer.de"
 
+  # TCP entrypoint for Gitea SSH
+  gitea-ssh:
+    address: ":2222"
+
 # Certificate Resolvers
 certificatesResolvers:
   letsencrypt: