Smart recording interpolation fills the gaps in pwx files present
when the original .fit or .tcx files had them.
Test files for running: 1 activity in .fit, .tcx and .pwx formats
Lap swimming expands the sample-per-length and pause to 1-sec sampling.
Test files for lap swimming: 2 activities in .pwx format,
one from Garmin 910xt other from Finis SwimSense.
When Sport="Other", there is no GPS data but there is distance information
it is assumed the file cames from lap swimming.
They have one Trackpoint per length, which are expanded to one point per second
in similar way to Smart Recording and laps without Trackpoints to signal pauses
which are expanded to one point per second up to 10x Smart Recording HWM.
Added contributed Garmin FR910xt pool swim file to test/rides folder
.. add some sample files with calibration messages to the
test/rides directory
.. remove the calibration marker color config (we can add it
back if needed, but was in the wrong 'sequence' and is
probably just a little bit *too* fine grained).
