* initial oob_ip support for devices
* add primary ip and oob ip checkmark to ip address view
* add oob ip to device view and device edit view
* pep8
* make is_oob_ip and is_primary_ip generic for other models
* refactor oob_ip
* fix oob ip signal
* string capitalisation
* Misc cleanup
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Co-authored-by: Jeremy Stretch <jstretch@netboxlabs.com>
