Fix HDR, multi-core optimization and customization

Fix HDR implementation: Ensure the menu and text don't glow, but keep the glow effect for objects that are actually light sources. Add dedicated HDR settings.
Add support for 10-bit color depth or higher.
Improve multi-core optimization to prevent stuttering/lag during chunk generation and loading.
Add a toggle to disable the fog introduced in recent versions.
Move the "Menu Background Blur" setting from "Quality & Performance" to the "Preferences" section.