Exempt if sender & target has same weight with exemption-luckperms addon

[BlueTree242]

In most cases, An admin should not be able to punish another admin.

[A248]

This might be a breaking change, so I think there should be a configuration option for it. It will have to default to the old behavior.

During testing, you can set the configuration value via the mocking infrastructure.

[BlueTree242]

done :)