FIX: make project compile able with Xcode v13.2

Author: Oldes

make/rebol3.nest

@@ -656,6 +656,7 @@ common: [
 		defines: ENDIAN_LITTLE
 		defines: USE_OLD_PIPE
 		cflags:  -Wno-pointer-sign
+		flag:    -mmacosx-version-min=10.9 
 	]
 	#if Linux? [
 		library: %m

src/os/osx/sys-codecs.m

@@ -27,6 +27,10 @@
 **
 ************************************************************************/
 #include "sys-codecs.h"
+#import <CoreGraphics/CGImage.h>
+#import <CoreGraphics/CGContext.h>
+#import <CoreGraphics/CGDataProvider.h>
+#import <ImageIO/ImageIO.h>
 #define kSDUTTypeHEIC ((__bridge CFStringRef)@"public.heic")
 #define kSDUTTypeHEIF ((__bridge CFStringRef)@"public.heif")
 #define kSDUTTypeDDS  ((__bridge CFStringRef)@"com.microsoft.dds")