Add support for hostname alias on endpoints

[UsynligAnd]

Describe the feature request

Adding a configuration option to define an alias for endpoint hostname/url's.
This could be some sort of addition/extension to the option for hiding hostname/url which is possible today (hide-url/hide-hostname). This would be especially nice in situations where you want to monitor a service with a backend local IP address, but the service is accessible on a dns address, maybe behind the likes of cloudflare proxy or similar.

This could be accomplished like this:

  - name: Public webapp
    group: frontend
    url: "http://192.168.0.20:80"
    ui:
      hostname-alias: www.publicwebapp.com

Why do you personally want this feature to be implemented?

I have services behind Cloudflare which i want to monitor directly, but dont want the statuspage to show the local addresses.
I also have tcp services i cant monitor directly because of SRV records, where I want the SRV record address to be shown.

How long have you been using this project?

No response

Additional information

No response