Add support for The Witcher 3: Wild Hunt

[Karandra]

Description

Add support for The Witcher 3: Wild Hunt, as requested by @Project579. This kind of related to #10, but support for Witcher 3 may require another plugin manager implementation and some other things rendering it impossible to provide support with just an instance template.

Tasks

• Research Witcher 3 mods system
• Create new plugin manager implementation if needed.
• Create instance template.

[Project579]

Looking Forward to it!