[ActorScroller] Add GetSecondsPauseBetweenItems() Lua binding (sm-ssc v2 port)

src/ActorScroller.h

@@ -41,6 +41,7 @@ public:
 	void SetFastCatchup( bool bOn )				{ m_bFastCatchup = bOn; }
 	void SetSecondsPerItem( float fSeconds )		{ m_fSecondsPerItem = fSeconds; }
 	void SetSecondsPauseBetweenItems( float fSeconds )		{ m_fSecondsPauseBetweenItems = fSeconds; }
+	float GetSecondsPauseBetweenItems()		{ return m_fSecondsPauseBetweenItems; }
 	void SetNumSubdivisions( int iNumSubdivisions )		{ m_exprTransformFunction.SetNumSubdivisions( iNumSubdivisions ); }
 	float GetSecondsForCompleteScrollThrough() const;
 	float GetSecondsToDestination() const;