Is your feature request related to a problem? Please describe.
When dealing with a lot of servers it's impossible to use automatic deployment tools (e.g. docker-compose) because it's required to edit configuration files manually.

Describe the solution you'd like
The ability to override values in config using environment variables.
Something like this:https://luckperms.net/wiki/Configuration#environment-variables

Describe alternatives you've considered
Copying the entire configuration files between servers, but it quickly becomes unmaintainable if I need to use different values for different servers. The ability to only set options that needs changing is much easier and convenient.
I've tried generating config file with the only options I've changed but e.g. HuskHomes/HuskChat/Velocitab just overwrites some of the settings (the nested ones).
#26 should probably fix this, but it would be better to not deal with files at all.

Additional context