Store effective call number type on item record

Purpose: To store the effective call number type on the item record (uses item level call number type, if available, otherwise uses the holding level one). This will allow us to:

• Support search of items on effective call number
• Provide data to reporting (they prefer to get stored data than to have to calculate on the fly)
• Store the data that needs to be further transformed into machine-sortable call number CB: This doesn't apply because current plan is to generate machine-sortable call number based on the call number data element only
• Possibly: serve as a component of a derived "call number block" which would assemble various call number related data elements into a single "block" for display throughout FOLIO (Loans, Loan details, Check in, Check out, Requests etc.)

Scenarios:

1. Scenario
   • Given an item record
   • When displayed (UI mockup and story still in progress)
   • Then an Effective call number type should display from a stored value
2. Scenario
   • Given the Effective call number type field
   • When displayed/stored
   • Then use item-level "Call number type", if available, otherwise, use holding-level "Call number type"

NOTE: When developing this feature, please bear in mind that we will soon be implementing the ability to move items from one holding to another.