Create a test plan

Create a manual test plan that contributors can go through to ensure they have not broken any existing functionality.

Example of layout of a black box manual test I did in an assignment for a different application:

This will need to cover the steps the tester will need to take, and the expected behaviour of that action, and the outcome. The outcome is more so something contributors will record individually, I'm not intending for a filled test plan to be merged in with every PR.

This test plan will need to cover all functionality of the system, so I'd recommend splitting the test plan into sections.

I'll let you choose the format of the test plan, e.g. a .md file in the repo. However, the format will need to be accessible on any platform and would not require the contributor to install any software.

As part of this issue, I'd also like to ask for the pull request template (find this in ./github/pull_request_template.md) to be updated so it prompts the contributor to go through the test plan, and update the test plan with new testing considerations if necessary.

This issue is open to being worked on for Hacktoberfest, comment below if you have any questions and/or would like to work on it! First come first serve.