No devices in `fixtures/smart/child` support the `get_device_time` or
`get_device_usage` methods so this PR tests for whether the device is a
hub child and marks those modules/methods as not supported. This
prevents features being erroneously created on child devices.
It also moves the logic for getting the time from the parent module
behind getting it from the child module which was masking the creation
of these unsupported modules.
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.
