Deprecate the staged changes API #17472
Description
Proposed Changes
Deprecate the staged changes API in preparation for its eventual removal from NetBox.
Justification
The recently released netbox-branching plugin provides a much more robust and scalable solution for the functionality this feature was intended to deliver.
Impact
Any users of this API (of which we expect there to be a fairly small number) will need to migrate to using the netbox-branching plugin before the staged changes API is removed in a future release (v4.3 at the earliest).