How to add supervisor to HA development?

Hi !
I succesfully installed home assistant core in visual studio an it works (localhost:8123)
I wanted to add supervisor so I cloned GitHub - home-assistant/supervisor: Home Assistant Supervisor) in my workspace.
I found a task “run supervisor” but when want to run it I have the error :

Executing task in folder supervisor: supervisor_run <
zsh:1: command not found: supervisor_run
The terminal process "/usr/bin/zsh '-c', 'supervisor_run'" failed to launch (exit code: 127).

What did I not understand?
More generally, where can I find a wiki or a video to create a custom component.

What are you trying to achieve?
You don’t need the supervisor to do HA development…

Hi Koying,
I was trying to follow this tutorial

and saw that it used a supervisor.

Can you advise me a tutorial to develop a custom component:
I created a mediaplayer for my french stb " sfr decoder". with node red and I would like to transform it in a custom component.