Add ability to Import Cables

[scetron]

Environment

• Nautobot version: 2.x
• nautobot-device-onboarding version: 4.x

Proposed Functionality

When importing a device, I should have the option to import any cables to connected devices. This can be done via LLDP, or other neighbor discovery protocol (CDP). This could extend to devices within Nautobot but outside the site being imported.

Use Case

For more complete import from the network, I would like to import cables, so I can document existing physical connectivity in my SoT for Golden Config and other use cases.

[scetron]

Closed by #202