Adding Pathfctory Custom Fieldgroups

## What are the schemas that are affected by the issue
None. Adding new fieldgroups that are not referenced anywhere

## What are examples of products that are impacted by the issue
Storing Pathfactory visitors, sessions, pageviews and content track details using custom fieldgroups in AEP for the analysis and using it further for AJO and CJA

The issue names no files, tests, or entry points. Start by reviewing existing custom fieldgroups in the XDM repository and the Pathfactory visitor, session, pageview, and content-track requirements for AEP, AJO, and CJA; done means the requested unreferenced fieldgroups are specified and added.

Written by the indexing model from the issue text.