Randomization updates

com.unity.perception/Editor/Randomization/Editors/ScenarioBaseEditor.cs

-using UnityEngine;
+using System;
+using UnityEngine.UI;
+using Button = UnityEngine.UIElements.Button;
+using Random = UnityEngine.Random;
 
 namespace UnityEditor.Perception.Randomization
 {
 
             CreatePropertyFields();
             CheckIfConstantsExist();
+
+            var randomSeedButton = m_Root.Q<Button>("random");
+            randomSeedButton.clicked += () =>
+            {
+                m_Scenario.genericConstants.randomSeed = (uint)Random.Range(int.MinValue, int.MaxValue);
+            };
 
             var serializeConstantsButton = m_Root.Q<Button>("serialize");
             serializeConstantsButton.clicked += () =>

com.unity.perception/Editor/Randomization/Uxml/ScenarioBaseElement.uxml

                 <Foldout style="padding-left: 16px" text="Constants" name="constants-list" tooltip="A list of parameters for this scenario that will be JSON serialized in the configuration file."/>
                 <editor:PropertyField name="configuration-file-name" label="Constants File Name" binding-path="serializedConstantsFileName"/>
                 <VisualElement style="flex-direction: row;">
+                    <Button name="random" text="Generate Random Seed" style="flex-grow: 1;"
+                            tooltip="Creates a new random seed"/>
                     <Button name="serialize" text="Serialize To Config File" style="flex-grow: 1;"
                         tooltip="Serializes scenario constants and randomizer settings to a JSON configuration file"/>
                     <Button name="deserialize" text="Deserialize From Config File" style="flex-grow: 1;"

com.unity.perception/Runtime/Randomization/Samplers/SamplerTypes/UniformSampler.cs

         }
 
         /// <summary>
-        /// Constructs a new uniform distribution sampler
+        /// Constructs a new uniform distribution sampler with the interval [min, max)
-        /// <param name="min">The smallest value contained within the range</param>
-        /// <param name="max">The largest value contained within the range</param>
+        /// <param name="min">The smallest value contained within the range (inclusive)</param>
+        /// <param name="max">The largest value contained within the range (exclusive)</param>
         public UniformSampler(float min, float max)
         {
             range = new FloatRange(min, max);