AsteroidOS support

[jmlich]

Support for AsteroidOS.

• the pairing page introduced aliases. The aim was to reduce number of devices in the list. There is about 20 code names for asteroid os devices
• battery service is generic
• weather service
• time service
• notification service
• media service

Closes #284

[jmlich]

• I am still not sure what to do with authentication agent, but it somehow works when is device paired in os in the same time.
• The Screenshot feature requires QBLEDescriptor. Additionally, I have also some minor bug there. It will be better to add it in separate pull request.
• The volume control in Media Service doesn't work perfectly. Some change in pulseaudio/libwatchfish is needed. This can be done in future.

[piggz]

Well, as I cant test this, and it looks reasonable, lets merge ... id like the large commented sections removed later :)