BHoM_Engine: add invert method parameter to FilterByType

#### Description:

As in the title, recently I have been working on a simple GH script where I wanted to filter out certain types from the set. I needed to do type matching and use the native GH filtering options, while having an extra bool to invert the filtering in `FilterByType` would do the job in one click.

Alternatively, you could return 2 lists of objects, in and out.