Docs: Docs Needed for Circulating Items With Deposits

[Jennifer Pringle]

Evergreen 3.11.1 and Evergreen 3.13

There is currently no documentation on how the circulation of items with deposits works other than

"In stock Evergreen, the following states will present an exception (i.e. ask for an override) on checkout and/or renew:
  Item-level data: Certain statuses (above), certain shelving locations (above), deposit = true, reference = true"

We've put together local documentation that outlines the item attributes and library setting that need to be set as well as what happens at check out and check in.

https://docs.libraries.coop/sitka/_items_with_deposits.html
(https://github.com/BCLibCoop/sitka-manual/blob/master/circ/circulation/circ-deposit.adoc)