Added LabGraph simulation file

[dtemir]

Description

The simulation file lets us run python setup.py install and then python simulation.py to reproduce the resulted LabGraph simulations with randomly generated data. It follows concepts listed under the LabGraph documenation on Concepts.

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules