Description

Add PageLoadStrategy to get rid of writing the webdriver's page load strategy manually.

Motivation and Context

Fixes issue#13236:

Hi!

In my project, I've encountered a situation where I need to change the default page load strategy, but the only way to find the names of the available strategies is by searching the documentation or looking at the descriptor implementation.

I think it would be convenient to have an enum for these names. This would help with hints of available strategy names and save us from having to remember their full names. It would also be great to add info about difference between these strategies in the docstring of this class, as is done in the documentation.

Thanks!

Usage example

If enum is named PageLoadStrategy, I can easily use strategy name as follows:

from selenium import webdriver
from selenium.webdriver.chrome.options import Options, PageLoadStrategy

options = Options()
options.page_load_strategy = PageLoadStrategy.EAGER

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation. -> normal, eager, none for Python
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.