How to create a plugin

[peakpwr]

Hello,
i'm trying to understand how to create a plugin and load it.
I saw plugins in c++ and others using PyQt.
What is the template? From where to start?
Can plugins only be displayed as tabs or can plugins add a page as well?

How to work with the app launcher page?

I read through the wiki and some issues but I'm not entierly sure how it works.
I managed to compile dash with some added c++ plugins like the G37 plugin but can't understand how to add a python based plugin. I guess they need to be put inside the /build/plugin folder as the don't need compilation?

Maybe someone can help by providing a hello world python plugin with all needed files and the directory it has to be put.

Thank you very much :)