Front-foot install-hooks

[nathanjmcdougall]

Motivation
Came across this project:
https://github.com/tox-dev/pre-commit-uv
(C.f. https://github.com/j178/pre-commit-rs which has somewhat similar objectives)

The benchmarking showed the pre-commit install-hooks command which I wasn't familiar with. This solves a user experience problem where the hooks are installed on the first commit which is exceptionally slow. We are better to front-foot that during installation with usethis.

Apparently, pre-commit install and pre-commit install-hooks can be combined into a single command as pre-commit install --install-hooks. But it might be better to keep the commands separate to give more informative error messages via usethis.

Summary of desired enhancement
Run pre-commit install-hooks when initializing pre-commit via usethis.