Inventory. Tenant settings for item list in the top of the instance record

Overview: The item list on the Instance record is by now stretching the use of the multi column list (MCL) to it's limits, and more new columns are being suggested; e.g. a new column for copy number (uChicago and Public libraries) - UIIN-1251
Substitute MCL display with a card display has been considered, but this solution is not on the near term Stripes Force roadmap.

Goal: Develop a customizable MCL list, where each tenant can configure a
the customizable view and also having the ability to set order for of the columns.
The solution will include a way to save the preferences for the display of the item list per tenant.

Capturing a list of library preferences (libraries in production and round-iv libraries): https://docs.google.com/presentation/d/1UeEi-UqVaH7cdZYQv0NOzYyCYIOJ2dvFI7vzlaJyZoc/edit#slide=id.p

Out of scope: - but to be considered long term:

• possibility to set different views for different functional areas (e.g. something similar as teams in Acquisition)
• possibility to set different views per user

Other comments:
At MM-SIG a user defined view was discussed 1/21/2021 - and the feed back and conclusion was that the MM-SIG want to have the long term work implemented, and will not prioritize implementation of a user session defined display

Slide deck with some mock-ups for the user session defined display:
https://docs.google.com/presentation/d/1M18Xd2CtdntlEhvhHZpoT_RoFqOJW-Iw3HwOexPs8MQ/edit#slide=id.p