Group custom fields by their containing custom data group in processors

[agileware-fj]

Is your feature request related to a problem? Please describe. Currently all custom fields are lumped together into one accordion grouping when configuring processors. This is problematic on side with more than a few custom fields, especially when some of them are named similarly from different groups. We'd like these to be grouped by custom data group.

Describe the solution you'd like The preferred solution would be to treat each custom data group with a dedicated accordion section in the relevant processor, e.g. for the contact processor:

Additional context Agileware ref CFC-41