Add netbox script to automatically build device type

[rogeroger-yu]

trafficstars

What does this script do

Used in conjunction with the project netbox-community/devicetype-library to automatically create all content related to devicetype defined therein.

[DanSheps]

I will let @ryanmerolle get to this one

[ryanmerolle]

I think we can close this given there area few working scripts in the community for this and a few netbox-plugins.