Update baport.py

Added support for api 9

woops

added comment for use_toolbar

set_main_menu_window is actually set_main_window

set_main_menu_window is now set_main_window

removed compatibility layer from baport

added shebang and made comments docstring

Updated README

added api8_to_api9 function

revert port_7_to_8.py deletion

renamed port_7_to_8.py to baport.py

funtional approach and better argument support

Merge branch 'main' of https://github.com/bombsquad-community/baport

1.7.35 compability fixes