Add support for Swift GPS

[fts-tmassey]

Hello!

libdivecomputer just added support for GPS data from Swift GPS transmitters. Here’s the commit: libdivecomputer/libdivecomputer@4f5abbd

I’m sure you will gather up these changes at some point. I was just hoping to create some awareness and see if that point might be sooner!

Thank you very much from a happy Subsurface user who has a new Swift GPS… :)