[feature] Post hook

[aemonge]

Can we have hooks to perform after ( and before ) swtiching python venv ?

[MichaelAquilina]

sounds like a good idea. It seems potentially quite easy to do if you would like to give a go at contributing this change yourself :)

Otherwise I'll find some time to do it later on

[aemonge]

Hi @MichaelAquilina , I've tryied here -> #202

I hope it's ok, if not let me know what to fix; I'm happy to contribute 😉