Implemented indirect diffuse by pre-integrating the sky-sphere,

res/dpr/data/light_data.inc

res/dpr/strategy/multi_view/multi_view_stereo.frag

res/dpr/strategy/native_forward/native_stereo_forward.frag

res/dpr/utility/deferred_local_light.frag

res/dpr/utility/deferred_local_light_with_shadow.frag

res/dpr/utility/light_library.glsl

src/scene.cpp

src/scene.hpp