FEATURE: Workout without GPS

[commongoal-rev]

Hi,

i really love your project, it helped me a lot to find a healthy way to train myself.
Unfortunately I cant start a Workout without the GPS being active, because I have to use a home trainer in the next months, I would really like to capture my heart rate an training data stationary.

Feature Proposal: Workout Mode w/o GPS

Thanks for your great work and have a good day :).

I am willing to test things :)