Implement docker integration

[FoxxMD]

A quick and dirty integration for onboarding docker containers into netbox. It needs more work but it is in a working state.

• Connect to docker instances, through socket or http, using docker-py
• Create and associate containers using Virtualization assets for Device X
  • Each docker instance is associated as a Virtualization Cluster for a Device X
    • Cluster gets a separate IPAM VRF for all associated VMs/Services
    • Non-compose containers create a Virtual Machine called Docker Standalone
    • composed containers create a Virtual Machine called Docker Compose [compose project name]
      • Config setting to disable/enable this behavior
  • Docker networks are created as Virtual Interfaces
    • Created with IP Ranges based on network subnet
    • Associated to compose/bridge VM
  • Containers created/updated as IPAM Service
    • Associated to VM
    • Creates IP address w/ VRF
    • Ports and Protocol updated on each run
    • Handles containers on the host docker network

I haven't decided if this is this the best way to organize containers yet as I haven't seen much guidance around docker and netbox in general. Feedback is welcome.