helper functions added

- Added helper functions to facilitate Vector3 and Transform operations.
- Defined operator overloads for Vector3 (not tested).
- Added fly and spawnPrefab functions to the Misc namespace (not tested).
- Added fly speed to settings.

user/settings/settings.hpp

@@ -39,6 +39,7 @@ namespace settings {
 	extern bool server_name_spoof;
 	extern std::string server_name;
 	extern bool fly;
+	extern float fly_speed;
 	extern bool unlock_all;
 	extern bool exp_modifier;
 	extern int new_exp;