Preconfiguring microG parameters for ROM developers, flashable ZIPs and Magisk modules

Hi and sorry for bad English

What about adding the ability to preconfigure microG settings for the first run?

At some point, I realized that we need (by we, I mean those who make zip archives and magisk modules for installing microg) ability to make Device registration, Cloud messaging, Safetynet and other options enabled by default. Depending on the conditions and purpose of the ROM or flashable zip.
It would be cool to embed microG in the settings menu and turn it off from launcher.

In general, I'm talking about the fact that it would be useful to have a configuration file that would be applied by microG at first ROM boot, in which most of the parameters of the microG could be configured.

I like the f-droid approach with a prepared list of repositories.
https://forum.f-droid.org/t/adding-repositories-to-fdroid-client-when-building-a-rom/5956

What do you think about it @mar-v-in ?

No files, tests, or entry points are identified in the issue. Start by locating microG's first-run settings initialization and existing ROM or module configuration handling; done would mean an agreed configuration mechanism can apply the requested parameters on first boot and support the stated integration options.