Add a few macros to support InverterLayer on BASALT
Add a few macros to support InverterLayer on BASALT

Re-add support for InverterLayer in SDK3.0.
Just include effect_layer.h in files using InverterLayer and it should
work out of the box.
Warning: This InverterLayer actually invert all colors, unlike the
original InverterLayer that had a weird behavior on Basalt.

nevraw/EffectLayer,clach04/EffectLayer,ron064/EffectLayer,clach04/EffectLayer,gregoiresage/EffectLayer,clach04/EffectLayer,n4ru/EffectLayer,nevraw/EffectLayer,n4ru/EffectLayer,gregoiresage/EffectLayer,nevraw/EffectLayer,n4ru/EffectLayer,gregoiresage/EffectLayer,ron064/EffectLayer,ron064/EffectLayer