Added github workflow actions for building and linting

[kossiefu]

Contributes to Call-for-Code-for-Racial-Justice#30 #58

What did you do?

Added workflows on:

• creation and update of pull request to build & run unit tests and run linter
• push to main branch to build

Why did you do it?

To make sure that changes submitted will not break the build

How have you tested it?

• Created Pull Request and verified that workflows were triggered and successfully completed.
• Pushed a change to the main branch and verified that the workflow was triggered and successfully completed.

Were docs updated if needed?

• No
• Yes
• N/A

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

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
• My changes generate no new console logs
• Fixes entire issue
• Partial fix for issue