Instrument endpoint and tests

[nitrosx]

Description

This PR fixes the filter issues on Instrument endpoint and extends the API tests.

Motivation

Instrument endpoint was returning the incorrect instrument when filtering was applied or when the instrument id was being passed. Same for the patch one.

Fixes:

• filtering in main endpoint, path and findone

Changes:

• casl ability factory
• instrument controller, service, and schema
• data for test
• instrument tests

Tests included/Docs Updated?

• Included for each change/fix?
• Passing? (Merge will not be approved unless this is checked)
• Docs updated?
• New packages used/requires npm install?
• Toggle added for new features?