new "invert mouse horizontally" option in the controls settings tab.

[Haxardous]

Summary

added a new "invert mouse horizontally" option, ticked on by default (as it is the default behavior in vanilla SA).

Motivation

was working on a resource to achieve the same behavior in the following video, apparently I would need to rewrite the camera system inside MTA's lua engine in order to achieve this, as I can simply invert the camera source instead of the world 3D space, achievable by reloading the world but it might but... not so easy.
https://www.youtube.com/watch?v=C3N2VBdDisA&t

Test plan

simply validate the "controls" options via settings,

Checklist

• Your code should follow the coding guidelines.
• Smaller pull requests are easier to review. If your pull request is beefy, your pull request should be reviewable commit-by-commit.