add deprecation notices for transactions that are no longer supported

[elrayle]

This does a bit of cleanup as well. There should not be any impact on the function of code.

• rename update_work to work_update - All resources follow the pattern resourcetype_create, resourcetype_destroy, resourcetype_update. The other work transactions followed this pattern already (e.g. work_create and work_destroy).
• moved requires for deprecated transactions and steps to a separate location to make them easier to remove later
• add more prominent DO NOT USE notice to deprecated legacy AF work transactions - This has been a source of confusion for several developers
• added deprecation notices to steps that are no longer supported

@samvera/hyrax-code-reviewers