removed the stb_image files and re-add them as a submodule. (#2223)

- stb_image.h: Version update 2.25 -> 2.28
- stb_resize.h: Version update 0.96 -> 0.97
- stb_write.h: Version update 1.14 -> 1.16

Co-authored-by: CaCO3 <caco@ruinelli.ch>

.gitmodules

@@ -7,3 +7,6 @@
 [submodule "code/components/tflite-micro-esp-examples"]
 	path = code/components/tflite-micro-esp-examples
 	url = https://github.com/espressif/tflite-micro-esp-examples.git
+[submodule "code/components/stb"]
+	path = code/components/stb
+	url = https://github.com/nothings/stb.git

code/components/jomjol_image_proc/CImageBasis.h

@@ -11,9 +11,9 @@
 
 #include <math.h>
 
-#include "stb_image.h"
+#include "../stb/stb_image.h"
-#include "stb_image_write.h"
+#include "../stb/stb_image_write.h"
-#include "stb_image_resize.h"
+#include "../stb/stb_image_resize.h"
 
 #include "esp_heap_caps.h"
 

code/components/jomjol_image_proc/make_stb.cpp

@@ -4,10 +4,10 @@
 #include "../../include/defines.h"
 
 #define STB_IMAGE_IMPLEMENTATION
-#include "stb_image.h"
+#include "../stb/stb_image.h"
 
 #define STB_IMAGE_WRITE_IMPLEMENTATION
-#include "stb_image_write.h"
+#include "../stb/stb_image_write.h"
 
 #define STB_IMAGE_RESIZE_IMPLEMENTATION
-#include "stb_image_resize.h"
+#include "../stb/stb_image_resize.h"