Added system path stuff on Windows

Fixed typo in image loading

code/game/core.c

@@ -1,7 +1,7 @@
 void G_ImagesLoad(G_State *game) {
 	M_TempScope(0, 0) {
 		Str8 exe_path = FS_SystemPath(temp.arena, FS_SYSTEM_PATH_EXE);
-		Str8 path     = Sf(temp.arena, "%.*s/assets", exe_path);
+		Str8 path     = Sf(temp.arena, "%.*s/assets", Sv(exe_path));
 
 		FS_List assets = FS_PathList(temp.arena, path);