chore(agama): bridge refactoring

[jgomer2001]

Hello some hints for pythonic way of writing coding:
Instead of if StringHelper.isEmpty(param): you can just use if not param
Instead of if StringHelper.isNotEmpty(acr) and acr.find(prefix) == 0: you can use if acr and acr.startswith(prefix): (

jans/docs/script-catalog/person_authentication/agama-bridge/AgamaBridge.py

Line 208 in 62dae4a

if StringHelper.isNotEmpty(acr) and acr.find(prefix) == 0:

)