feat!: Add Authelia for authentication and Redis for session storage

- Introduced Redis service for session management with health checks.
- Added Authelia service for user authentication with necessary environment variables.
- Configured Traefik to use Authelia as middleware for various services.
- Created Authelia configuration file with session, storage, and access control settings.
- Added user database for Authelia with an example admin user.

authelia/users_database.yml

@@ -0,0 +1,39 @@
+# Authelia User Database
+# Documentation: https://www.authelia.com/configuration/security/authentication/file/
+
+# To add users:
+# 1. Generate a password hash:
+#    docker run authelia/authelia:latest authelia hash-password 'your_strong_password'
+# 2. Add the user entry below.
+#
+# To approve registered users (if registration is enabled in configuration.yml):
+# 1. New users will appear here, possibly commented out or with 'disabled: true'.
+# 2. Uncomment the user or set 'disabled: false' to grant access.
+
+users:
+  # First user is typically considered the admin in access rules
+  admin:
+    displayname: "Admin User"
+    # Replace this hash with one generated for your desired password!
+    password: "$argon2id$v=19$m=102400,t=1,p=8$PBf/L9l3s7LwN6jX/B3tVg$9+q3kL8VAbpWj9Gv9Z6uA5bA4zT1fB2fH3aD5c6b7e8" # Example hash for 'password'
+    email: admin@example.com
+    groups:
+      - admins
+      - users
+
+  # Example of a regular user
+  # user1:
+  #   displayname: "Regular User"
+  #   password: "..." # Generate hash
+  #   email: user1@example.com
+  #   groups:
+  #     - users
+
+  # Example of a registered user waiting for approval (if registration enabled)
+  # newuser:
+  #   disabled: true
+  #   displayname: "New User"
+  #   password: "..." # Hash generated during registration
+  #   email: newuser@example.com
+  #   groups:
+  #     - users