Adds support for a `/test` command, without breaking the existing
`/ok-to-test` habits.
This is a _sloppy_ version of `/ok-to-test`. Turns out humans are
sloppy. So let's embrace the human. 🤯
Example incantation:
```
/test sanity workflow
```
The sloppy parser at work:
Of course, if a PR body contains `/ok-to-test`, that takes precedence,
and any `/test` is ignored.
We're also moving the logic of parsing the tags to a separate Javascript
file. It's still not in a form that's easily testable, perhaps, but I
hope this is a start for us to get to a "unit-tested CI". ❤️
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Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
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