A wrapper around external TraX client that handles running the tracker. This function supports the new tracker integration approach using TraX protocol.
Input:
tracker: Tracker structure.
sequence: Sequence structure.
context: Execution context structure. This structure contains parameters of the execution.
Output:
trajectory: A trajectory In case of fake execution mode the function returns the execution command string.
time: Elapsed time in seconds. In case of fake execution mode the function returns the working directory.