Is your feature request related to a problem? Please describe.

Newbie to snmpsim and it's great. I'm using it in pytests where the code under test uses pysnmp. Currently I'm calling the command line snmpsim-command-responder in a subprocess during test setup, and killing the process during test teardown.

It'd be great if there was a context managed class which takes the command line args and does the same as the cli.

Describe the solution you'd like

A solution might be a class something like SnmpsimCommandResponder. It might be used something like:

def test_foo():
    with SnmpsimCommandResponder(data_dir="data/", agent_udpv2_endpoint="127.0.0.1:1234",...):
        # execute some code which makes snmp calls

A quick glance at the code, it looked like this might require some refactoring of responder.py, splitting out the argument parsing and the actual main listening loop into a separate component, but honestly not certain.

Describe alternatives you've considered

Currently running it directly in a subprocess works.

Additional context

No response