Add tray rules and identities editor

MeetingAssistant/Workflow/WorkflowRulesEditorScrollPolicy.cs

@@ -0,0 +1,31 @@
+namespace MeetingAssistant.Workflow;
+
+internal static class WorkflowRulesEditorScrollPolicy
+{
+    private const double BottomTolerance = 8;
+
+    public static bool ShouldAutoScroll(
+        double verticalOffset,
+        double viewportHeight,
+        double previousContentHeight)
+    {
+        if (viewportHeight <= 0 || previousContentHeight <= 0)
+        {
+            return true;
+        }
+
+        if (previousContentHeight <= viewportHeight)
+        {
+            return true;
+        }
+
+        return verticalOffset + viewportHeight >= previousContentHeight - BottomTolerance;
+    }
+
+    public static double GetBottomOffset(
+        double viewportHeight,
+        double contentHeight)
+    {
+        return Math.Max(0, contentHeight - viewportHeight);
+    }
+}