Option for Auto Sync Accounts

[JHenneberg]

Currently you have to manually upload data to external providers which can be quite tedious to do after each workout.
It would be quite convinent to have the option to activate auto sync for GoogleFit, Strava and Velo Hero separatly.

To avoid a block for example by Strava make the default, that it is turned of. So everyone who anyway wants to upload will activate it and the amount of requests should be the same.

Similar: #2

[surge919]

Adding to this
I don't use the items offered by the Upload option.

I share my file to Dropbox so I can pull them in to Golden Cheetah.
The steps are the following:
Highlight the track
Click "Share"
Select ZIPs "(complete)"
Choose "Dropbox"
It remembers the last location for the "Add files to"
Select "Upload Here"
If the track was previously uploaded it warns that the file already exists in the folder
Choose "Don't replace them"

If you do add the option to Auto Sync, please include the above scenario.