CD Projekt RED has released an official modding tool for Cyberpunk 2077.
You can download REDmod, which is optional DLC, through Steam, GOG, the Epic Games Store, or through the Cyberpunk modding page.
If you are a Cyberpunk 2077 modder, you will want to read up on how this all works via the Cyberpunk modding support page, or hit the NexusMod link above.
CDPR promises it will be continuously updated alongside game patches to ensure compatibility and has ensured that current mods will still work with the tool.