New Metrics for MTB(mainly) - Bike - Time Carrying / Elevation Gain Carrying

... 2 new metrics (derived) mainly relevant for MTB or Race bike steep passes
... a) Time Carrying = moving < 8kph, gaining height, no power, no cadence
... b) Elevation Gain carrying = same criteria, but adding up the elevation gain

Since there is a certain level of variance in interpreting the data, the metrics is named as "Est".