[TASK] Create GitHub Actions Workflow

[noorbuchi]

Task Description and Info (what needs to be done?)

To ensure that newly added changes are working and are up to standard, a GitHub Actions workflow should be used.
More information about GitHub Actions can be found here

Acceptance Criteria (when is it considered complete?)

• Actions are ran after every commit and a PR merge
• Workflow runs on at least two operating systems (Ubuntu and Mac)
• Workflow should use Python 3.8
• Supported linters are ran as part of the action
• Test suite is included in the action

Time to complete (approximately, how much time will this take?)

Add estimate here

Person/People involved (who is working on this?)

@

Other information

Anything else that doesn't fit in previous categories