-Deprecate ImageTexture::load

-Add warning to Image::load when loading resources
-Add script binding for get_configuration_warning

core/image.cpp

@@ -36,8 +36,8 @@
 #include "math_funcs.h"
 #include "print_string.h"
 
+#include "io/resource_loader.h"
 #include "thirdparty/misc/hq2x.h"
-
 #include <stdio.h>
 
 const char *Image::format_names[Image::FORMAT_MAX] = {
@@ -1582,7 +1582,11 @@ Image::AlphaMode Image::detect_alpha() const {
 }
 
 Error Image::load(const String &p_path) {
-
+#ifdef DEBUG_ENABLED
+	if (p_path.begins_with("res://") && ResourceLoader::exists(p_path)) {
+		WARN_PRINTS("Loaded resource as image file, this will not work on export: '" + p_path + "'. Instead, import the image file as an Image resource and load it normally as a resource.");
+	}
+#endif
 	return ImageLoader::load_image(p_path, this);
 }