Export functionality to exclude sensitive properties

[ljacqu]

As seen in AuthMe, sometimes users need to report their configuration files but such files might include sensitive information like passwords we want to make sure users don't expose. Potentially could be solved by offering some sort of export functionality to save to a separate file that will replace data from sensitive properties (as indicated with an annotation?)

Relates to https://github.com/AuthMe/AuthMeReloaded/issues/1991