Add easy support for drag and drop e.g. sliders

[occupant23]

Selenide seems not to have such a feature. Implement it for Neo and try to port it back to Selenide.

[occupant23]

PoC and implementation idea:

import org.openqa.selenium.interactions.Action;
import org.openqa.selenium.interactions.Actions;

...

private void slideHorizontalUntilText(SelenideElement leftSlider, int movement, SelenideElement textContainer, String textToFind)
    {
        Actions moveSlider = new Actions(Neodymium.getDriver());

        int counter = 0;
        while (!textContainer.has(text(textToFind)))
        {
            if (counter > 23)
            {
                SelenideAddons.wrapAssertionError(() -> {
                    Assert.assertTrue("CircutBreaker: Was not able to interact with the slider", false);
                });
            }
            Action action = moveSlider.dragAndDropBy(leftSlider.getWrappedElement(), movement, 0).build();
            action.perform();
            Selenide.sleep(3000);
            counter++;
        }
    }

[occupant23]

Next steps:

• Add this functionality to the SelenideAddon class
• Build a basic function that can cover linear 2d movements
• Adopt variable naming
• Add short had functions for horizontal and vertical movements
• Add documentation to our wiki
• Add unit tests for this functions

[jseng92]

added requested changes

[jseng92]

we skip the "Add short had functions for horizontal and vertical movements" step because these functions are to special, so if needed the user can implement them by himself and use the generell function for it
There will be an example inside the documentation and in the code