Closes #109: Add support for NetBox 4.5

[miaow2]

Closes #109 and #108

[mrlnbllmnn]

2.13 is still missing migrations for the new owner model.
To get the plugin to work on 4.5.x I had to enable developer mode and run makemigrations.

[chris240189]

I can confirm that there are still migrations missing. I have troubles getting developer mode activated. @mrlnbllmnn could you please explain in more detail what you did to get things working again?

@miaow2 if you could get it fixed in the next version, that would be great.

[mrlnbllmnn]

Hi @chris240189
To activate developer mode, i had to append DEVELOPER=true to env/netbox.env (netbox-docker).
To make the migrations i had to enter the netbox container as root, then entering python3 manage.py makemigrations and python3 manage.py migrate.

[miaow2]

Hi @mrlnbllmnn @chris240189, thanks for pointing out the migrations. I will try to fix this in several days