v0.1.2: Multi-server architecture + security cleanup

- Implement multi-server Traefik + Sablier architecture
- Add label-based automatic service discovery
- Create separate Sablier stack deployment
- Add remote server deployment workflow (Option 3)
- Add 9 new functions for multi-server management
- Remove deprecated config-templates folder
- Replace hardcoded private data with placeholders
- Update backup timestamp format to YY_MM_DD_hh_mm
- Add markup.yml to .gitignore

Breaking changes:
- Removed Sablier from core docker-compose.yml (now separate stack)
- Config templates moved from config-templates/ to docker-compose/core/
- REQUIRED_VARS now dynamic based on deployment type

docker-compose/core/authelia/config/users_database.yml

@@ -3,10 +3,10 @@
 ###############################################################
 
 users:
-  kelin:
-    displayname: "kelin"
-    password: "$argon2id$v=19$m=65536,t=3,p=4$e97MzVuvteD5VfHT+Kw9Ew$NnK63ABYKRm5d8nWG7Z8dbRBJfhhHjaf71zQ354KSN4"
-    email: kelinshomelab@gmail.com
+  admin:
+    displayname: "admin"
+    password: "generate-with-openssl-rand-hex-64"
+    email: admin@example.com
     groups:
       - admins
       - users