The config refactor in addf7ff6a broke health settings on GTR3 and GTS3
- GTS 3 and GTR 3 health configs use protocol v1. The only difference
seems to be that the steps goal is a SHORT instead of an INT.
- It needs a refactoring from the ground up to better handle different
versions, but this is enough to get the GTR 3 and GTS 3 working.
- File uploads are split in chunks, with the size dictated by the
watches. There seem to be 2 protocol versions, without any noticeable
differences
- Extract the file upload logic to a standalone class. This makes it
easier to keep track of concurrent requests, each of which have their
own session id
- Icons larger than 8KB will end up split in multiple chunks - we now
handle that correctly
- Notification icons are also requested in 2 different formats, but
the actual encoding seems to be the same, with only a different id
