COMPMID-1543: Unable to include ImageLoader.h in multiple object files

Removed STB_IMAGE_IMPLEMENTATION from the ImageLoader.h header and moved it to utils/Utils.cpp

Change-Id: Ic41efd723c0c07d3ede86872fad411f2ffc5f162
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/145989
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
2 files changed