Add non-compliant endpoints from Selenium

[titusfortner]

Description

Selenium currently defines these endpoints and makes them available to Appium:

• GET_SCREEN_ORIENTATION
• SET_SCREEN_ORIENTATION
• GET_SCREEN_ROTATION
• SET_SCREEN_ROTATION
• SWITCH_TO_CONTEXT
• GET_CURRENT_CONTEXT_HANDLE
• GET_CONTEXT_HANDLES

We're looking at removing everything that isn't w3c compliant — SeleniumHQ/selenium#13372

So, here I am, not removing things in Selenium before making sure things are good in Appium. 😂

Thanks.

[mykola-mokhnach]

I would say most of the above commands only make sense in the Appium context, so it is a good idea to remove them from Selenium. Just let us know which version won't have them anymore before it is released

[titusfortner]

I'm removing for 4.17. Hope to release it between 1/17 & 1/23 (trying to go off of https://chromiumdash.appspot.com/schedule)

[mykola-mokhnach]

cc @valfirst ^