Updated motor modules and motor babbling data from the current-position-mapping module

[pierreklintefors]

A module to tune servo control parameters, updated EpiServo module to check for a ServoControlParameter.json file in its directory. If it exist, the servo motor's parameter values are set to the values in the file. CurrentPositionMapping module is performing motor babling and saves position and current data to json files. Currently using nlohmann json package which is slow when the file becomes large