[FEATURE] Add 'raise' functionality to edisgo.check_integrity()

[khelfen]

Is your feature request related to a problem? Please describe.
At the moment when we check the integrity of the edisgo object only logging warnings are given. This is not always desirable when you want to catch errors in the edisgo object programmatically.

Describe the solution you'd like
We should add an error kwarg and raise errors instead of loggings when error="raise" is set.