Update properties of SchematicsGear

Replaced the parts number array with the Gear Ratio property.

3/3_common.ts

@@ -208,7 +208,7 @@ export type EnginePart = {
 export type SchematicsGear = {
     Symbol: string,
     Coordinates: Vector2,
-    PartNumbers: number[]
+    GearRatio: number
 };
 
 /**