[YM!] Veil Iris Lights Compat (VILC)

Added

• Added a dedicated depth-based light pass for Iris installations with shaderpacks disabled
• Added automatic switching between the native framebuffer pass and the Iris shaderpack pass

Changed

• Updated compatibility for Veil 4.1.4
• Updated compatibility for Iris 1.8.14 beta 1
• Updated compatibility for Sodium 0.8.12 beta 1
• Rebalanced shaderpack light contribution to preserve block textures and material detail
• Simplified shaderpack compositing to a single controlled light pass
• Removed the secondary screen-blended fill pass introduced in 1.3.3

Fixed

• Fixed Veil colored lights disappearing when Iris was installed but shaderpacks were disabled
• Fixed overly saturated shaderpack lighting replacing the visible texture of illuminated blocks
• Fixed a crash caused by attempting to reactivate Veil dynamic-buffer internals that Veil disables while Iris is installed