Refactor scanner

[KapJI]

Breaking changes

• Rename google_device to network_device.
• Remove ip_address and port fields from Device constructor, they're only used in tests and add code complexity.

Scanner changes

• Stop discovery after the timeout. Inspired by pychromecast. Otherwise it can modify list of discovered devices while it's being processed. Also it spams logs.
• Store devices in dict to filter duplicates. Before update_service was inserting copies in devices list.
• Handle remove remove_service.

Other changes

• Replace GoogleDevice class with NetworkDevice named tuple. It should really just hold the data, all checks are moved outside.
• Remove unnecessary type hints from Final, they can be inferred automatically.
• Remove few tests which are no longer needed.
• Update some comments.

Tested locally on my HA instance.

[KapJI]

Jobs failed because of pypa/setuptools-scm#608.

[leikoilja]

Bud, amazing job! Thanks for a good refactoring. Make sense to move the ip and port related things into the scanner and extract it as a network_device. 🔥 💯