Added Label control functionality tests

Win11ThemeSampleApp/MainWindow.xaml

@@ -8,6 +8,16 @@
         Title="MainWindow" Height="450" Width="800">
     <Grid>
         <StackPanel Orientation="Vertical">
+            <Label Content="Demo label" Height="30" Width="100" IsEnabled="False" >
+                <Label.ToolTip>
+                    <ToolTip>
+                        <TextBlock>
+                            Demo help text
+                        </TextBlock>
+                    </ToolTip>
+                </Label.ToolTip>
+            </Label>
+
             <Button Content="Click Me" Appearance="Light"/>
             <CheckBox Content="Test Checkbox"/>
             <RadioButton>Hello World</RadioButton>

Win11ThemeTest/LabelTest.cs

@@ -0,0 +1,32 @@
+using FlaUI.Core;
+using FlaUI.Core.AutomationElements;
+using FlaUI.Core.Definitions;
+using FlaUI.UIA3;
+
+namespace Win11ThemeTest
+{
+    public class LabelTest
+    {
+        [SetUp]
+        public void Setup()
+        {
+        }
+
+        [Test]
+        public void LabelControlTest()
+        {
+            var app = FlaUI.Core.Application.Launch(@"..\\..\\..\\..\\Win11ThemeSampleApp\\bin\\x64\\Debug\\net9.0-windows\\win-x64\\Win11ThemeSampleApp.exe");
+            using (var automation = new UIA3Automation())
+            {
+                var window = app.GetMainWindow(automation);
+                var label = window.FindFirstDescendant(cf => cf.ByName("Demo label")).AsLabel();
+
+                Assert.That(label.ActualHeight, Is.EqualTo(30));
+                Assert.That(label.ActualWidth, Is.EqualTo(100));
+                Assert.That(label.Text, Is.EqualTo("Demo label"));
+                Assert.False(label.IsEnabled);
+                Assert.That(label.HelpText, Is.EqualTo("Demo help text"));
+            }
+        }
+    }
+}