Instance - support keyword search fields

Purpose/Overview:
The purpose of this story is to allow the user a keyword search across multiple fields by simply providing the term in the search box or by specifying which field needs to be searched.

Requirements/Scope:
1. Case insensitive
2. Word match in following Inventory Instance fields:

• series (array of strings)
• identifiers (all) (array of objects)
• electronicAccess (array of objects)

3. Supports search in other than English languages (including CKJ languages, Arabic, Hebrew)

Approach:

Acceptance criteria:

• Supports full text search
• Query returns accurate hit count
• User can search by any word that is a part of the field's value
• Results are ranked based on term frequency, inverse document frequency and field length
• Stemming according with configured on the tenant language tokenizers

Outside the scope
*UI work

• AND, OR, NESTING
• title (string) - MSEARCH-16
• alternativeTitles (array of objects) - MSEARCH-16
• indexTitle (string) - MSEARCH-16
• contributors (array of objects) - MSEARCH-17
• publication.publisher (string) - MSEARCH-18
• subject (array of strings) - MSEARCH-19
• classifications (array of objects) - MSEARCH-20
• notes (array of objects) public - MSEARCH-21
• notes (array of objects) - staff only - MSEARCH-21
• tags (array of objects) – MSEARCH-23

Additional Information:
Inventory Instance schema: https://github.com/folio-org/mod-inventory-storage/blob/master/ramls/instance.json
Honeysuckle bugfest environment: https://bugfest-honeysuckle.folio.ebsco.com/