Feature: CI

[fmalatino]

Description
Co-authored with @rem1776

This PR re-introduces the CI workflow.

It also changes the location of the compiled shared object file from cFMS for inclusion within the install of pyFMS.

How Has This Been Tested?
A unit test has been created for each feature of pyFMS. A script to run all unit tests, run_tests.sh is included in the repository and is executed within the workflow

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
• New check tests, if applicable, are included