Update git URL for stb

[amirtronics]

Description of the change

stb library link needs to be updated as the old URL is nonexistent for stb_image_resize.h

[prabhuomkar]

@roboticswithamir can you try using the new stb_image_resize2.h and maybe update your PR?
Reference: https://github.com/nothings/stb/blob/master/stb_image_resize2.h

[amirtronics]

@prabhuomkar
I tried using this new stb_resize_2.h stbir_resize_uint8() has been removed in new release and we are left with only two options stbir_resize_uint8_srgb() and stbir_resize_uint8_srgb() which don't take depth as input.

[prabhuomkar]

@prabhuomkar I tried using this new stb_resize_2.h stbir_resize_uint8() has been removed in new release and we are left with only two options stbir_resize_uint8_srgb() and stbir_resize_uint8_srgb() which don't take depth as input.

@roboticswithamir i checked the comments of the code and I can see following guide to port to new APIs: https://github.com/nothings/stb/blob/master/stb_image_resize2.h#L19-L23
which says:

stbir_resize_uint8():
          - call `stbir_resize_uint8_linear`, cast channel count to `stbir_pixel_layout`

[mfl28]

As @prabhuomkar mentioned, updating to stb_image_resize2.h is simple using the guide:

• extern/CMakeLists.txt: Change "stb_image_resize" to "stb_image_resize2".
• utils/image_io/CMakeLists.txt: Change stb-image-resize to stb-image-resize2 in target_link_libraries(...).
• utils/image_io/src/image_io.cpp: Update the include to #include "stb_image_resize2.h", update the resizing code to

   stbir_resize_uint8_linear(image_raw.get(), width, height, 0,
       image_resized_buffer.data(), new_width, new_height, 0, static_cast<stbir_pixel_layout>(depth));

Also, thanks for bringing this issue to our attention @roboticswithamir !

[prabhuomkar]

@roboticswithamir looking forward to the updated PR so that we can get it merged at earliest. Thanks.

[amirtronics]

I've added a new commit and the PR is updated. It's working fine now.