Hi everyone! I want to know what

Harvester Network Controller

project do. I didn't find any documentation for it. Could anyone give me idea about this project or any documentation?

It's the internal component of harvester that's responsible for managing network configuration (cluster networks, vlans, etc.). I don't know that we've got any detailed documentation for it - the readme at https://github.com/harvester/network-controller-harvester is pretty brief...