[ENHANCEMENT] Update RUN_uncor to write tracks to output/tracks

[aweinert-MIT]

Relation

The script, RUN_uncor and RUN_terminal are good and simple script to introduce users to the encounter model classes and how to generate model samples or tracks derived from samples. This functionality existed in the previous default example scripts, RUN_1_emsample and RUN_2_sample2track and functions, em_sample and sample2track. Issues #35 and #36 will develop the functionality to write samples and tracks to file.

Description

Using the functionality created by issues #35 and #36, update RUN_uncor to write tracks to the default directory of output/tracks.