Vivo Fit 3 support

[TaaviE]

As the issues were closed on your repository I made this PR.

If and what are your plans on polishing up and upstreaming the Vivo Fit 3 code to Gadgetbridge, @mjsir911?

[mjsir911]

Hi @TaaviE! Thanks for your interest in this.

For reference, there is some other garmin watch work at mormegil-cz/Gadgetbridge

If and what are your plans on polishing up and upstreaming the Vivo Fit 3 code to Gadgetbridge, @mjsir911?

I would love for the work I've done to be upstreamed but I don't have much experience with contributing changes this large.

Additionally, there is still a lot of work to be done implementing all the features of the vivofit watch. Currently I just about have setting the time working, and all the groundwork for everything else.

Let me know if you have any more questions, or if you are interested in helping out with the gadgetbridge vivofit stuff, would greatly be appreciated :)

[TaaviE]

but I don't have much experience with contributing changes this large.

A good start would be to get rid of excess logging, linter warnings and to extract string resources (for localization). After that is done, you can make a PR and you'll most likely be given feedback what to improve and how.