Add in hook to allow for altering of Profile Schemas

Overview

in 5.24.0 a new hook was added in that allowed for extensions to modify which fields can be added to Profiles https://github.com/civicrm/civicrm-core/pull/16655 However that didn't extend to what fields can be available within the profile editing modal / schemas.

I propose a new hook profileSchemas which would allow extensions to modify the profileSchemas used in the backbone.marionette modal