[new-conversion] pace <-> speed

[jonadem]

Description
In the runner world, people often refers to pace (e.g. https://www.strava.com/running-pace-calculator) but for a lot of other cases, speed is used.
It would be handy to have a min/km <-> km/h (and a min/mi <-> mi/h for imperial units users) converter.

There are obviously websites which do the job (e.g. https://runbundle.com/tools/running-pace-speed-conversion-calculator) but I don't have to explain why an app can be better ! ;-)

[ferraridamiano]

Nice catch! Thank you!