Add option to mjspec for creating a texture directly from a buffer.

PiperOrigin-RevId: 662186527
Change-Id: I469c876681d52964ac971c0bb2ec3517224d3a3d

src/user/user_api.h

@@ -302,6 +302,9 @@ MJAPI mjsMaterial* mjs_asMaterial(mjsElement* element);
 
 //---------------------------------- Attribute setters ---------------------------------------------
 
+// Copy buffer.
+MJAPI void mjs_setBuffer(mjBuffer* dest, const void* array, int size);
+
 // Copy text to string.
 MJAPI void mjs_setString(mjString* dest, const char* text);