Extend support of Entities that can be portaled

[jusdino]

Many entity types have been introduced that aren't currently supported by BuildPortals. Let's extend support to all Entities that:

• Can be a passenger in a minecart,
• Can be a passenger in a boat, or
• Can be held on a lead

[jusdino]

To limit scope for this issue, let’s include specifically supporting Frogs, Allays, Cats, Parrots and the new Sniffers and Camels.