Created workflow for actually running code coverage

[ben18785]

No description provided.

[fcooper8472]

Unless there's a good reason to run these on macOS-latest I would definitely run them on ubuntu-latest: they have much more availability and spin up faster. You quite often have to wait while a macos runner becomes available.

[ben18785]

Thanks @fcooper8472 Have changed it to that.

Interesting codecov is failing here because we don't have any functions to test! So, I'd suggest we wait before merging this in, perhaps?

[fcooper8472]

Probably a good plan!

Or put in a silly dummy function & test just to satisfy yourself that it's all good to go as soon as there's real functionality?

[ben18785]

I ran it with a dummy function on my local machine and codecov then worked. So think we're ok (just afraid that I'd forget to remove said dummy function). Hopefully we'll have some functions to test in the next few days...