Add Basic Auth configuration for Docker services via GUI

[markdudov]

Currently, adding Basic Authentication to a deployed Docker service (e.g., via Traefik labels) requires manual configuration in the "Labels" section. This can be error-prone and isn't very user-friendly for beginners who just want to quickly protect a staging or internal tool.

I would like to see a dedicated Basic Auth section in the service settings GUI.
It should include:

• A toggle to enable/disable Basic Auth.
• Input fields for Username and Password.
• Coolify should automatically handle the password hashing (htpasswd) and inject the necessary Traefik labels into the container configuration.

The current alternative is manually generating an htpasswd string and adding multiple Traefik labels like traefik.http.middlewares.my-auth.basicauth.users, which is tedious.

This would significantly improve the developer experience for protecting simple dashboards, preview environments, or private APIs without setting up complex OIDC/SSO providers.