Instance - create and update date filters

Purpose/Overview:
The user should have an option to search Instance records by time the record was created or updated.

Requirements/Scope:

1. The user can narrow search by specifying start and end date when the record was created based on metadata.createdDate field (type: string, format: date-format)
2. The user can narrow search by specifying start and end date when the record was updated based on metadata.updatedDate field (type: string, format: date-format)
3. The provided date should support year, month and day (YYYY-MM-DD)
4. Search should provide start date and end date (from, to) but the end date should not be required

Approach:

Acceptance criteria:

• Search returns accurate hit count
• User can search for instances that were creates starting with yyyy-mm-dd
• User can search for instances that were created between yyyy-mm-dd and yyyy-mm-dd
• User can search for instances that were updated starting with yyyy-mm-dd
• User can search for instances that were updated between yyyy-mm-dd and yyyy-mm-dd

*Additional information: *
Metadata schema: https://github.com/folio-org/raml/blob/69f6074f5f48fd58e379e9ae76c892aa68c115ea/schemas/metadata.schema