Add Fields for start and end date of licenses and make them and the quantity avalible in the API

[jamesgreen3000]

Plugin version

1.1.3

NetBox version

4.1.7

Feature type

Change to existing functionality

Proposed functionality

Add fields for start date and end date of license also if the license is still valid.
Add this information to the API and include the quantity

Use case

Some licensing (such as Cisco) has a period of validity, this is hard to track using the licensing portals. Adding start and stop fields and making it available through the API would be a really nice tool, Also if the quantity was also available in the API.

Database changes

No response

External dependencies

No response