[Feature Request]: Treat java duration as foreign variant of datetime.timedelta #1217

Describe the feature

Similar to what is already possible for java.time.ZonedDateTime etc, a java.time.Duration instance should be seen as an instance of datetime.timedelta in python.

Notably timedelta objects already implicitly convert to java duration objects, it's just the other way round that is missing.

Expected behavior

Given a java method

java.time.Duration getDuration() {...}

A python side call should get an interop object:

duration = javaobject.getDuration()
# isinstance(duration, datetime.timedelta) returns True

Additional context

No response