Create Azure DevOps CI Pipeline Example in Docs

[frankhaugen]

Added an example that took way to long for me to figure out and I stumbled on the answer by accident in the "discussions". So here's the information I was looking for. I also added some opinionated parts, but its never a bad thing to give some advice.

I had ChatGPT do editorial pass for spellchecking and linguistical flow, (I'm fluent in English, but not native, so I tend to construct clunky sentences)

Please check the following before creating a Pull Request

• If this is a new feature or piece of functionality, have you started a discussion and gotten agreement on it?
• If it fixes a bug or problem, is there an issue to track it? If not, create one first and link it please so there's clear visibility.
• Did you write tests to ensure you code works properly?

[thomhurst]

Thanks @frankhaugen

[thomhurst]

https://thomhurst.github.io/TUnit/docs/examples/tunit-ci-pipline