Swap U offset for idle/pressed cursor sprites

Since the cursor is mostly idle, it makes sense to set its sprite as
the default.

src/camera/src/camera.c

@@ -50,10 +50,10 @@ int cursor_render(const struct cursor *const c)
     switch (c->state)
     {
         case CURSOR_STATE_IDLE:
-            s->u += CAMERA_CURSOR_WIDTH;
             break;
 
         case CURSOR_STATE_PRESSED:
+            s->u += CAMERA_CURSOR_WIDTH;
             break;
     }