Feature: Method to switch to shadow DOM and back

[jakob-bagterp]

References:

• https://developer.mozilla.org/en-US/docs/Web/API/Web_components/Using_shadow_DOM
• https://glazkov.com/2011/01/14/what-the-heck-is-shadow-dom/
• https://www.lambdatest.com/blog/shadow-dom-in-selenium/
• https://medium.com/@titus_on_testing/shadow-dom-in-python-selenium-df8d731b5005
• https://stackoverflow.com/questions/77069982/selenium-shadow-dom-inside-a-shadow-dom
• https://stackoverflow.com/questions/55761810/how-to-automate-shadow-dom-elements-using-selenium

Checklist:

• Similar to iframe
• Should this be considered for login and cookies banner combos?
• Tests
• Documentation
• Examples