IsVehicleModGen9Exclusive (#1233)

* IsVehicleModGen9Exclusive

* tweak: add return type

---------

Co-authored-by: Dillon Skaggs <dillskaggs@gmail.com>

Author: coalaura

VEHICLE/IsVehicleModGen9Exclusive.md

@@ -0,0 +1,20 @@
+---
+ns: VEHICLE
+aliases: ["0x00834EAC4A96E010", "_IS_VEHICLE_MOD_HSW_EXCLUSIVE"]
+---
+
+## IS_VEHICLE_MOD_GEN9_EXCLUSIVE
+
+```c
+// 0x00834EAC4A96E010 0xEF66663B
+BOOL IS_VEHICLE_MOD_GEN9_EXCLUSIVE(Vehicle vehicle, int modType, int modIndex);
+```
+
+
+## Parameters
+* **vehicle**: The vehicle handle
+* **modType**: The mod type (see [`SET_VEHICLE_MOD`](#_0x6AF0636DDEDCB6DD))
+* **modIndex**: The mod index
+
+## Return value
+Returns whether the specified mod is exclusive to gen9 or not.