add `range` to PointLightDescriptor

[schell]

See https://github.com/KhronosGroup/glTF/blob/main/extensions/2.0/Khronos/KHR_lights_punctual/README.md#light-shared-properties

renderling/crates/renderling/src/light/shader.rs

Lines 447 to 448 in 9b51846

	// TODO: add `range` to PointLightDescriptor
	// See <https://github.com/KhronosGroup/glTF/blob/main/extensions/2.0/Khronos/KHR_lights_punctual/README.md#light-shared-properties>