List keys function

[WilfredAlmeida]

Related Issues

This is associated with the following issues: #4

Changes proposed

List API keys feature in the SDK.

Checklist (Check all the boxes which are applicable)

• My code follows the code style of this project.
• [] My change requires a change to the documentation.
  • If yes, I have updated the documentation accordingly.
• All new and existing tests passed.
• This PR does not contain plagiarized content.
• The title of my pull request is a short description of the requested changes.

[Jonxslays]

Just a note before I begin reviewing the code:

You should not merge your PR branch into master on your fork. You should PR the branch into master of the parent repository. It makes pulling down your code to test messier if you do it the way you've done.

[Jonxslays]

Mostly documentation updates, and just a small refactor. The feature is working well great job!

[WilfredAlmeida]

Just a note before I begin reviewing the code:

You should not merge your PR branch into master on your fork. You should PR the branch into master of the parent repository. It makes pulling down your code to test messier if you do it the way you've done.

Thanks for the info. I'll keep this in mind and PR accordingly hence forth.

[WilfredAlmeida]

I've implemented the suggested changes. Please take a look. Thanks!

[Jonxslays]

Added a few more comments to address, and the failing test is just due to using Response::Error which doesnt exist, instead of Response::Err, which does.