Required for the P300 firmware update with `auto_off` module on child
devices. Will query child modules for parent devices that are not hubs.
Coverage will be fixed when the P300 fixture is added
https://github.com/python-kasa/python-kasa/pull/915
For power strips, the autooff data needs to be requested from the
children.
Until we do that, we should not create these features to avoid crashing
during switch platform initialization.
This also ports the module to use `_initialize_features` and add tests.
Address the inconsistent naming of smart modules by removing all "Module" suffixes and aligning filenames with class names. Removes the casting of modules to the correct module type now that is is redundant. Update the adding of iot modules to use the ModuleName class rather than a free string.
