Sync two adguard servers and their zones

[Stephan-4711]

Prerequisites

• I have checked the Wiki and Discussions and found no answer

• I have searched other issues and found no duplicates

• I want to request a feature or enhancement and not ask a question

The problem

For redundancy reasons there are more than 1 adguard servers needed.
Integrated into some appliances like addons for heterogenous hardware like opnsense, home assistant etc. There is a sync between multiple hardware needed.

Proposed solution

Add a feature to sync the adguard settings and the dns zones into the adguard home code.

Alternatives considered and additional information

No response

[schzhn]

Duplicate of #573