[FEATURE] Simplify the process of setup the Manager & Agents for users

[rabits]

Is your feature request related to a problem? Please describe.

For most of the users it's too hard to follow the wiki documentation about how to setup the Manager & Agents.

reported by: Rony Soussan

Describe the solution you'd like

I think there should be a way to automate this process and wrap it into some simple UI... Need to find a simple and useful way.

[rabits]

Overall I think I can prepare UI buttons to start the Manager or Agent directly from the Addon preferences, so the workflow will be like - you running blender as usual, enables the BlendNet addon and click button to run Manager or Agent. After that on the Client blender instance you will be able to connect to Manager (and the certificate will be automatically received from the Manager) and add the Agents machines IP's. So this way the only thing you will need - is to understand the general BlendNet structure (Client->Manager->Agent) and the IP addresses where the Manager and Agents is available.