updated fileio and collections libs

rewrote fileio lib to use structs and methods. i also updated collections lib to fix bugs and be more consistent

libs/collections/list.h

@@ -3,9 +3,11 @@
 
 #include <groundext.h>
 #include <groundvm.h>
+#include <stddef.h>
 
 extern const uint8_t STARTING_ELEMENTS;
 
+GroundValue createList(int64_t initialCapacity);
 void initLists(GroundScope* scope);
 
 #endif