Add a pre-commit hook which ensures uv.lock is up to date

[nathanjmcdougall]

Motivation
It's possible to de-sync with the lockfile if we don't have a pre-commit check for this.
As a pre-commit hook it can be fixed automatically and also we can check it on CI.

Should look at https://github.com/astral-sh/uv-pre-commit to see if there's a satisfactory solution

Summary of desired enhancement
Ability to check the lockfile is up-to-date in CI and pre-commit.

[nathanjmcdougall]

Easy:

- repo: https://github.com/astral-sh/uv-pre-commit
  # uv version.
  rev: 0.5.2
  hooks:
    # Update the uv lockfile
    - id: uv-lock

[nathanjmcdougall]

Blocked by #132, or at least until this is merged and released:
astral-sh/uv#10622

[nathanjmcdougall]

Was having issues but should be resolved by this:
www.github.com/astral-sh/uv/pull/11046