Screencast Keys and Mouse?

Hello.

I want to show my keystrokes and my mousepresses like in this video:
How to Screencast Keys in Blender! Show Keys pressed in Blender! Screencast keys blender!

There is a link to this script:
space_view3d_screencast_keys.py

Installation

There is no need to install this script, it is part of Blender, but you first need to enable it.
Find it in: User Preferences > Add-Ons > 3D View

I can’t find it in Blender 2.90?

Is there not an official screencast keys and mouse tool in bender?

How to show blender key strokes on the screen, you can watch this video;