How to Create Plugin Cura LE 3.6

Is there a guide or wiki on how to create a plugin compatible with Cura LE 3.6

Ultimaker has some documentation. See:

Many of the plugins are provided in source (.py) form so you can usually find a good starting point and modify it from there.

Post processing plugins are found at C:\Program Files (x86)\cura-lulzbot 3.6\plugins\PostProcessingPlugin\scripts.