Use OpenMP or SIMD to optimize observers

[Bam4d]

The vector observer and observers using vulkan for rendering have certain loops which can and should be easily parallelized which would significantly speed up these observers.

RGBA to RGB optimize this:
https://github.com/Bam4d/Griddly/blob/develop/src/Griddly/Core/Observers/Vulkan/VulkanDevice.cpp#L541

Optimize these loops here:
Should probably iterate over the objects and convert the x,y coordinates to make this significantly faster on it's
https://github.com/Bam4d/Griddly/blob/develop/src/Griddly/Core/Observers/VectorObserver.cpp#L58

[Bam4d]

Some optimizations have taken place in #95, but no SIMD/OPENMP

[Bam4d]

No need to do OpenMP and SIMD anymore because other optimizations are much better!!! #100