Added method for clearing the clipboard.

Author: jensakejohansson

src/FlaUI.WebDriver.UITests/ExecuteTests.cs

@@ -69,10 +69,8 @@ public void ExecuteScript_WindowsClearClipboard_IsSupported()
         {
             var driverOptions = FlaUIDriverOptions.TestApp();
             using var driver = new RemoteWebDriver(WebDriverFixture.WebDriverUrl, driverOptions);
-
             driver.ExecuteScript("windows: setClipboard", new Dictionary<string, object> {
                 ["b64Content"] = "Pasted!"});
-
             driver.ExecuteScript("windows: clearClipboard");
             var result = driver.ExecuteScript("windows: getClipboard", new Dictionary<string, object> {});
             Assert.That(result, Is.EqualTo(""));