test(cli): add type casing tests for add cv and transfer cv

Table-driven tests verifying both lowercase and UpperCamelCase type
names work correctly for all input types (file, dir, utf8, helm) and
access types (helm) through the full add cv -> transfer cv flow.

On-behalf-of: Gerald Morrison (SAP) <gerald.morrison@sap.com>
Signed-off-by: Gerald Morrison (SAP) <gerald.morrison@sap.com>

Author: morrison-sap