Tko november23 minor fixes

Minor fixes:

Moves QWeb/config.py to QWeb/custom_config.py
- This makes it easier to provide custom config as keyword/config.py will not mask it
- Also added unit tests and improved docs for Set Wait Function
SwitchBrowser will try to focus / bring to foreground the active window in switched browser instance
safari - remove argument "reuse_service"
- as it was removend in selenium 4.16
modified browserstack browser names to match local names

qentinelqi / qweb