Cleanup and get rid of many warnings when compiling with stricter warnings (#578)

* Mini improvements

* Fix some splits

* Remove last comma from enums

* Fix symbols

* Fix some headers and missing prototypes

* Replace most of f32 with float

* Replace most of Point3d with Vec

* Add missing esprite include with guard

* Add HuSetVecF to ext_math behind a guard

* More includes

src/REL/m455Dll/main.c

@@ -17,6 +17,10 @@
 #include "ext_math.h"
 #include "math.h"
 
+#ifndef __MWERKS__
+#include "game/esprite.h"
+#endif
+
 typedef struct camera_view_params {
     float zoom;
     Vec pos;