Add Anti-flicker filter option

[DarthMotzkus]

Description

Hi. Is it possible to implement an anti-flicker option? So the menu presentation on CRT televisions can be better looking since it's all flickering on the words and menu lines.

Thanks!

Release Context

This feature is still unavailable in both the latest release and the pre-release versions, so it applies to both cases and does not represent a regression.

How to solve the problem

An option to set anti-flicker on or off in menu settings, an anti-flicker that affects the menu only, of course.

Describe alternatives you've considered

No response

Additional context

No response