Split off Object-related functions from ScriptInterface

Follows 34b1920e7b.

This splits off the object-related functions, such as
[Set/Get/Has]Property, CreateObject, CreateArray, FreezeObject.

It also puts the definitions in the header itself, which might end up
with faster code here & there, though perhaps slower compilation time
(somewhat doubtful since we already included most things anyways).

Differential Revision: https://code.wildfiregames.com/D3956
This was SVN commit r25430.

source/simulation2/scripting/JSInterface_Simulation.cpp

@@ -131,7 +131,7 @@ JS::Value GetEdgesOfStaticObstructionsOnScreenNearTo(const ScriptInterface& scri
 
 	ScriptRequest rq(scriptInterface);
 	JS::RootedValue edgeList(rq.cx);
-	ScriptInterface::CreateArray(rq, &edgeList);
+	Script::CreateArray(rq, &edgeList);
 	int edgeListIndex = 0;
 
 	float distanceThreshold = 10.0f;
@@ -176,7 +176,7 @@ JS::Value GetEdgesOfStaticObstructionsOnScreenNearTo(const ScriptInterface& scri
 
 			CFixedVector2D normal = -(nextCorner - corner).Perpendicular();
 			normal.Normalize();
-			ScriptInterface::CreateObject(
+			Script::CreateObject(
 				rq,
 				&edge,
 				"begin", corner,
@@ -185,7 +185,7 @@ JS::Value GetEdgesOfStaticObstructionsOnScreenNearTo(const ScriptInterface& scri
 				"normal", normal,
 				"order", "cw");
 
-			scriptInterface.SetPropertyInt(edgeList, edgeListIndex++, edge);
+			Script::SetPropertyInt(rq, edgeList, edgeListIndex++, edge);
 		}
 	}
 	return edgeList;