Geometry_Engine: Add HashArray method for core geometry types

[pawelbaran]

Description:

As in the title, HashArray seems to be missing for a few core geometry types:

• TransformMatrix
• Cartesian

[alelom]

The reason why we didn't add GeometryHash for some geometric types is because we thought it would never get used with them. In particular, we added support for "non-conceptual" types: everything except Vector, TransformMatrix, Cartesian, and probably a few more. Anyways, it can make sense, for completion's sake, to add support for all -- especially now that we have added this new "aggregated" GeometryHash.

[pawelbaran]

Yes, I see immediate use for transforms, so definitely worth adding 👍