[feature] Make Python interface faster by avoiding calling simple_bca in a loop

[drobnyjt]

Is your feature request related to a problem? Please describe.
I think the overhead of the Python interface is caused by looping over simple_bca

Proposed solution
Rewrite simple_bca_list_py to avoid looping over struct creation

Alternative solution(s)
Consider reorganizing the Python interface

Additional context
Can I spawn run the code in parallel if I'm using the Python interface?

[drobnyjt]

Added in dev branch. Still need to add documentation of the new function.