migrate to new c djstdlib

src/gfx/geometry.h

@@ -3,14 +3,14 @@
 
 #include "stddef.h"
 
-struct Shape {
+typedef struct {
     unsigned int* indices;
     size_t indices_size;
     float* uv;
     size_t uv_size;
     float* xyz;
     size_t xyz_size;
-};
+} Shape;
 
 extern const Shape TRIANGLE;
 extern const Shape SQUARE;