feat: install pre-commit using gimmegit dependency

[dwilding]

This PR includes the pre-commit as a dependency of gimmegit, removing the need to call out to uvx or pipx. I've also compressed the output from two lines to one.

Before:

Installing pre-commit using uvx
pre-commit installed at .git/hooks/pre-commit

After:

Installing pre-commit hook

This PR also includes a small unrelated change to make runtime error messages have consistent formatting.

[Copilot]

Pull request overview

This PR simplifies the pre-commit installation process by making it a direct dependency of gimmegit, eliminating the need to call external tools like uvx or pipx. The output messaging is also consolidated from two lines to one for better user experience. Additionally, the PR standardizes error message formatting by adding consistent punctuation.

• Adds pre-commit as a project dependency
• Simplifies installation logic to use the pre-commit executable directly
• Updates all test expectations to reflect the new single-line output message
• Standardizes error message formatting with trailing periods

Reviewed changes

Copilot reviewed 8 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
pyproject.toml	Adds pre-commit as a direct dependency
src/gimmegit/_cli.py	Refactors install_pre_commit to use direct pre-commit executable instead of uvx/pipx
src/gimmegit/_status.py	Adds period to error message for consistency
tests/unit/test_status.py	Updates test assertion to match new error message format
tests/functional/test_clone.py	Updates expected output to reflect new single-line pre-commit message
tests/functional/test_return_dir.py	Updates expected output to reflect new single-line pre-commit message
tests/functional/test_token.py	Updates expected output to reflect new single-line pre-commit message
.github/workflows/pipx.yaml	Updates CI workflow to check for new pre-commit output message

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[dwilding]

@copilot this PR has a failing check (pipx). Please review the changes to understand why the check is failing, then work on a fix.

[Copilot]

@dwilding I've opened a new pull request, #60, to work on those changes. Once the pull request is ready, I'll request review from you.