New PiHole 6.x API Support

[iadegesso]

Hi,
since PiHole 6.x has been released, I cannot get data throug this module anymore. This is due to the deep changes in the PiHole 6.x API with respect to the 5.x API.

Many thanks,

Iade

[eithe]

Unfortunately I don't use this anymore so can't help you, but if someone suggest changes, I am open for pull requests.