Camera Overhaul

Fixes:

• Fixed configuration screen not working on 1.16.x versions.
• Made the Fabric-specific ModMenu dependency just a suggestion instead.

Localization:

• German localization by @Lucanoria (PR #70).
• Mexican Spanish localization by @TheLegendofSaram (PR #76).
• Russian localization updates by @mpustovoi (PR #77).

Hotfix for the 'InvocationTargetException: null' 1.18.x forge crash.