Use libjpeg-turbo for improved jpg compatibility and speed

Co-authored-by: Rémi Verschelde <rverschelde@gmail.com>

thirdparty/basis_universal/patches/0002-external-jpgd.patch

@@ -1,22 +0,0 @@
-diff --git a/thirdparty/basis_universal/encoder/basisu_enc.cpp b/thirdparty/basis_universal/encoder/basisu_enc.cpp
-index 1f870c5de4..1cc982b134 100644
---- a/thirdparty/basis_universal/encoder/basisu_enc.cpp
-+++ b/thirdparty/basis_universal/encoder/basisu_enc.cpp
-@@ -504,7 +504,7 @@ namespace basisu
- 	bool load_jpg(const char *pFilename, image& img)
- 	{
- 		int width = 0, height = 0, actual_comps = 0;
--		uint8_t *pImage_data = jpgd::decompress_jpeg_image_from_file(pFilename, &width, &height, &actual_comps, 4, jpgd::jpeg_decoder::cFlagLinearChromaFiltering);
-+		uint8_t *pImage_data = jpgd::decompress_jpeg_image_from_file(pFilename, &width, &height, &actual_comps, 4, jpgd::jpeg_decoder::cFlagBoxChromaFiltering);
- 		if (!pImage_data)
- 			return false;
- 		
-@@ -524,7 +524,7 @@ namespace basisu
- 		}
- 
- 		int width = 0, height = 0, actual_comps = 0;
--		uint8_t* pImage_data = jpgd::decompress_jpeg_image_from_memory(pBuf, (int)buf_size, &width, &height, &actual_comps, 4, jpgd::jpeg_decoder::cFlagLinearChromaFiltering);
-+		uint8_t* pImage_data = jpgd::decompress_jpeg_image_from_memory(pBuf, (int)buf_size, &width, &height, &actual_comps, 4, jpgd::jpeg_decoder::cFlagBoxChromaFiltering);
- 		if (!pImage_data)
- 			return false;
-