add format and clippy checks to the CI jobs

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close #41

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@neon-mmd You may notice that the format check currently did not pass. I intentionally kept it that way to prove that the format check was not run previously.

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You may notice that the format check currently did not pass. I intentionally kept it that way to prove that the format check was not run previously.

I have now fixed the format.

[neon-mmd]

I have now fixed the format.

I was already planning to discuss fixing the formatting issues but I think you were quicker than me 😄 , now I feel I am bit lazy at maintenance work 😆 .

[neon-mmd]

Ok looks great!! 😄 I approve it, let's merge this as well.