Track & symlink the precommit hook

[scallyw4g]

The git hooks system is hilariously half-baked so we have to add some gymnastics to the build to actually get the repo hooks onto other peoples' machines

[PaulSteele34]

So, create a hooks folder and symlink that to the .git folder equivalents?

[scallyw4g]

@PaulSteele34 Exactly. Basically just busy-work I want to do, but haven't ;)

[EN1809]

Yeah, this issue is messing up that error further upstream. So this is a twofer.

[EN1809]

Done. I'll create a PR.