console (cli): Add config:delete to delete a key #16576

There is already a config:set to add a key in a section. Would be helpful to have a config:delete to delete a key in a section as well. This would be especially useful when combined with --value to remove an entry from array keys like severs[], Plugins[].

Thanks for suggesting this feature @gramakri

If someone is keen to work on this: It could work similar to https://github.com/matomo-org/matomo/blob/4.0.0-b3/plugins/CoreAdminHome/Commands/SetConfig.php#L19-L86 in a new DeleteConfig class. It's probably quite easy to implement and we will be happy to review.

I've put in a PR for this at
https://github.com/matomo-org/matomo/pull/17956