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.cpp

@@ -35,6 +35,7 @@ namespace settings {
 	bool server_name_spoof = false;
 	std::string server_name = "Jadis0x";
 	bool fly = false;
+	float fly_speed = 1.f;
 	bool unlock_all = true;
 	bool exp_modifier = false;
 	int new_exp = 2000;