Add support for Netbox >= 3.x

[danieltudares]

Environment

• Python version: 3.9.6
• Network Importer version: 3.0.4

Proposed Functionality

Add support for Netbox release 3.0 and above

Use Case

Run Network-importer on latest netbox releases

Configuration Changes

Upgrade netbox API to support 3.x

[jvanderaa]

This makes sense. The trick that we may need to figure out is what the backwards compatibility would look like.

First idea that comes to mind is to build out a whole new dispatcher that doesn't try to take on compatibility back and forth to detect what version. We can figure that all out.