Zapier plugin

[matmair]

I created a PoC for a Zapier integration. If you like you can test it before I try to release it.

Please use the link below to access the Integration on Zapier:
https://zapier.com/developer/public-invite/156997/a8461b72728d56fa688f047da01d73af/

You will need to install the plugin on the most bleeding edge of the server and with a small patch(#2877):
https://github.com/matmair/inventree-zapier