RAY TRACING POTATO shaders

- Fixed water reflections shifting during walking and camera rotation.
- Improved reflections of distant bridges and buildings, with fewer sudden gaps.
- Fixed white patches in reflections from terrain obscured by distance haze.
- Added controls for reflection radius, strength and nearby visibility. Nearby visibility is capped at 0.18.
- Corrected reflection strength so higher values no longer give the water a white cast.
- Reworked water ripples and added a separate speed setting.
- Added a faint tint and moving refraction to close, shallow water. These remain visible with surface ripples disabled.
- Increased sun glow and added sun and moon lens flare. Lens flare is enabled by default at strength 2.0.
- Added moon glow that follows the moon’s phase and size, affecting only its illuminated surface.
- Added optional motion blur, disabled by default.
- Enabled distance haze by default.
- Replaced the previous profiles with Fast, Default and Max.
- Removed realistic lava.

Default settings:
- Water ripple strength: 0.5
- Ripple speed: 1.0
- Underwater surface visibility: 0.4
- Reflection radius: 3.0
- World reflection strength: 1.0
- Nearby reflection visibility: 0.18
- Held flame flicker: enabled