Update verifier library data-type support

Make compliance meta-data data-type required for all.
Add data-type checking for all verifier modes.
Add initial enum support for new ROUND compliance mode.
Improve print out information from library.
Use numpy ctypes.data_as to get f16 support compared to ctypes_lib.

Signed-off-by: Jeremy Johnson <jeremy.johnson@arm.com>
Change-Id: Ie983ba4ea958a88556f30c09b3ebc19cd9ec96b7