[DEV] Finish setting up tests and automated workflow

[davidallendj]

The basics for unit testing are already in the repository under tests/basic.cpp, but the tests aren't really that meaningful as of right now. There should be some tests that guarantee the functionality of the tool works, such as installing, removing, updating, etc.

In addition, these tests should be ran and checked using an automated work flow with Github actions and/or Gitlab runners. The runners should create a new release upon completion with multi-arch builds.