Added Get/SaveProjectEntityWithoutMembers methods to CRMScript refere…

[SuperOfficeDevNet]

Update project agent operations #2947

[digitaldiina]

Build error cause:

The children list says SaveProjectEventEntity WithoutMembers(NSProjectEventEntity) — but the item that was actually added is SaveProjectEntityWithoutMembers(NSProjectEntity) (no "Event").

Two consequences:

• SaveProjectEventEntityWithoutMembers is referenced in the children list but has no matching item — DocFX tries to resolve it, fails, and when normalizing UIDs to lowercase for comparison, it throws the "to lower case" conflict error.
• SaveProjectEntityWithoutMembers is defined as an item but is absent from the children list, so it won't appear in the class overview.