Added argument to the UpdateLayout method for the HSS/VSS to move to a new starting page

Resolves: #451

Author: SimonDarksideJ

Runtime/Scripts/Layout/HorizontalScrollSnap.cs

@@ -223,12 +223,21 @@ private void SetScrollContainerPosition()
         /// <summary>
         /// used for changing / updating between screen resolutions
         /// </summary>
-        public void UpdateLayout()
+        public void UpdateLayout(bool resetPositionToStart = false)
         {
             _lerp = false;
             DistributePages();
+
+            if (resetPositionToStart)
+            {
+                _currentPage = StartingScreen;
+            }
+
             if (MaskArea)
+            {
                 UpdateVisible();
+            }
+
             SetScrollContainerPosition();
             OnCurrentScreenChange(_currentPage);
         }

Runtime/Scripts/Layout/VerticalScrollSnap.cs

@@ -218,11 +218,21 @@ private void SetScrollContainerPosition()
         /// <summary>
         /// used for changing / updating between screen resolutions
         /// </summary>
-        public void UpdateLayout()
+        public void UpdateLayout(bool resetPositionToStart = false)
         {
             _lerp = false;
             DistributePages();
-            if (MaskArea) UpdateVisible();
+
+            if (resetPositionToStart)
+            {
+                _currentPage = StartingScreen;
+            }
+
+            if (MaskArea)
+            {
+                UpdateVisible();
+            }
+
             SetScrollContainerPosition();
             OnCurrentScreenChange(_currentPage);
         }