Updated IInsertProcedure and all implementations to accept an optional 'addedWho' parameter in ToObjectProcedure, defaulting to "Rec.API". This enables tracking of the entity responsible for insert operations.
Refactored insert procedure-related classes by moving each record type (Action, Endpoint, EndpointAuth, Profile, Result, EndpointParams) and the IInsertProcedure interface into their own files under the new InsertProcedure namespace. Updated InsertObjectProcedureValidator to use the new namespace. This improves code organization, readability, and maintainability.
