[dotnet] implement pause action to match Java

implements #10691

dotnet/src/webdriver/Interactions/Actions.cs

@@ -470,6 +470,17 @@ public Actions ScrollFromOrigin(WheelInputDevice.ScrollOrigin scrollOrigin, int
             return this;
         }
 
+        /// <summary>
+        /// Performs a Pause.
+        /// </summary>
+        /// <param name="duration">How long to pause the action chain.</param>
+        /// <returns>A self-reference to this <see cref="Actions"/>.</returns>
+        public Actions Pause(TimeSpan duration)
+        {
+            this.actionBuilder.AddAction(new PauseInteraction(this.defaultMouse, duration));
+            return this;
+        }
+
         /// <summary>
         /// Builds the sequence of actions.
         /// </summary>

dotnet/test/common/Interactions/CombinedInputActionsTest.cs

@@ -375,6 +375,14 @@ public void CanClickOnSuckerFishMenuItem()
             WaitFor(() => { return result.Text.Contains("item 1"); }, "Result element does not contain text 'item 1'");
         }
 
+        [Test]
+        public void PerformsPause()
+        {
+            DateTime start = DateTime.Now;
+            new Actions(driver).Pause(TimeSpan.FromMilliseconds(1200)).Build().Perform();
+            Assert.IsTrue(DateTime.Now - start > TimeSpan.FromMilliseconds(1200));
+        }
+
         private bool FuzzyPositionMatching(int expectedX, int expectedY, string locationTuple)
         {
             string[] splitString = locationTuple.Split(',');