Tooltip for indexer and program plugin (#4589)

* Fix multiline title issue

* Added code to display tooltip for program and indexer plugin

* Added tests for Result class

* Theme based color for tooltip

* Added colors for tooltip

* Added string tags to tooltip

* Add initial show delay

* Seperated textbox for title and path

src/modules/launcher/Wox.Test/Plugins/ResultTest.cs

@@ -0,0 +1,37 @@
+using NUnit.Framework;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Windows;
+using Wox.Plugin;
+
+namespace Wox.Test.Plugins
+{
+    [TestFixture]
+    class ResultTest
+    {
+        [Test]
+        public void Result_UpdatesToolTipVisibilityToVisible_WhenToolTipDataIsSet()
+        {
+            // Arrange
+            Result res = new Result();
+            string toolTipText = "ToolTipText";
+
+            // Act
+            res.ToolTipData = new ToolTipData(toolTipText, string.Empty);
+
+            // Assert
+            Assert.AreEqual(res.ToolTipVisibility, Visibility.Visible);
+        }
+
+        [Test]
+        public void Result_UpdatesToolTipVisibilityToCollapsed_WhenToolTipDataIsNotSet()
+        {
+            // Act
+            Result res = new Result();
+
+            // Assert
+            Assert.AreEqual(res.ToolTipVisibility, Visibility.Collapsed);
+        }
+    }
+}

src/modules/launcher/Wox.Test/Plugins/ToolTipDataTest.cs

@@ -0,0 +1,23 @@
+using NUnit.Framework;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using Wox.Plugin;
+
+namespace Wox.Test.Plugins
+{
+    [TestFixture]
+    class ToolTipDataTest
+    {
+        [Test]
+        public void Constructor_ThrowsNullArgumentException_WhenToolTipTitleIsNull()
+        {
+            // Arrange
+            string title = null;
+            string text = "text";
+
+            // Assert
+            var ex = Assert.Throws<ArgumentException>(() => new ToolTipData(title, text));
+        }
+    }
+}