Redirect to servername

### Prerequisites

- [X] I have checked the [Wiki](https://github.com/AdguardTeam/AdGuardHome/wiki) and [Discussions](https://github.com/AdguardTeam/AdGuardHome/discussions) and found no answer

- [X] I have searched other issues and found no duplicates

- [X] I want to request a feature or enhancement and not ask a question

### Description

#### What problem are you trying to solve?
I like to use `force_https` but it redirects to the same hostname that I used in my browser. That is fine if the server should use multiple hostnames. But if I call my server with IP I will redirected to https with the server IP that leads to TLS certificate issue (bad cert domain). Would be helpful if the `server_name` could be used for the redirect from http to https.

#### Proposed solution
Introduce `force_https_to_server_name` with default `false`. If it is `true` it could redirect to `server_name`.

#### Alternatives considered

#### Additional information