[Features] New parser for some .env values

[Mednoob]

I have seen many user having trouble when it comes to setting some env value like alt prefix and owners. The value of these env value will be changed from JSON array to something that is simpler. It will be a list separated with comma or semicolon. For example, owners env value will be like this:

OWNERS="366169273485361153, 390045370240991234"

This would probably be easier to setup for basic user than using JSON array format. I'm still open to any new and probably better ideas for env value parsing. So, if you have any great idea you want to share for the value parsing, just comment on this issue.

[Mednoob]

Feature added in commit 775fac8