refactor: Consolidate Authelia configuration management and update setup scripts

- Removed outdated configuration files and scripts.
- Introduced a new setup script to streamline environment and Authelia configuration updates.
- Enhanced .gitignore to exclude unnecessary files.
- Updated README to reflect new setup process and configuration details for Authelia v4.38+.

authelia/configuration.example.yml

@@ -22,8 +22,8 @@ session:
     password: ${AUTHELIA_SESSION_REDIS_PASSWORD}
     database_index: 0
   cookies:
-    # Using a wildcard domain pattern - works for Tailscale domains
-    - domain: '*.ts.net'
+    # Using parent domain to allow proper cookie scope
+    - domain: 'ts.net'
       authelia_url: 'https://tailscale-nas.ts.net'
       default_redirection_url: 'https://tailscale-nas.ts.net/home'
       same_site: lax
@@ -56,7 +56,7 @@ authentication_backend:
 access_control:
   default_policy: deny
   rules:
-    # This will match any Tailscale domain
+    # This will match any Tailscale domain - using wildcard with domains is allowed in rules
     - domain: '*.ts.net'
       policy: one_factor