Added new stocking surface feature;
Fixed the issue that diffuse bsdf is not energy conserving.
Fixed the bug that shader can not render alpha clip properly;
Added HairBlendingSetting in UTSRenderPassSetting;
Added MaterialType to UTS;
Added MaterialFeature scope to UTS material editor;
Merged HairBlendingPass and HairShadowPass into UTSPass;
Fixed the bug that character box light can not update rotation correctly according to bound light source;