Refactor GUI Apps for improved Windows compatibility

[mdmintz]

Refactor GUI Apps for improved Windows compatibility

The Apps to refactor:

• SeleniumBase Commander / GUI
• SeleniumBase Behave GUI
• SeleniumBase CasePlans

(Some improvements will also affect macOS and Linux users)

[mdmintz]

This was resolved in 4.20.1 - https://github.com/seleniumbase/SeleniumBase/releases/tag/v4.20.1