✨ feat: add pre-commit hook config

[TribuneX]

Summary

This PR makes git-sumi usuable via pre-commit.

Related issue

#179

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How has this been tested?

• Manual tests (see https://pre-commit.com/#developing-hooks-interactively)
• Unit tests
• Integration tests

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Type of change

• Bug fix (fixes an issue without altering functionality)
• New feature (adds non-breaking functionality)
• Breaking change (alters existing functionality)
• UI/UX improvement (enhances user interface without altering functionality)
• Refactor (improves code quality without altering functionality)
• Documentation update
• Other (please describe below)

---

Checklist

• I have read the contributing guidelines.
• I have added tests to cover my changes.
• All new and existing tests passed.
• My code follows the code style of this project.
• I have formatted the code with cargo fmt.
• My change requires updating the documentation.
• I have updated the documentation accordingly.

[TribuneX]

The output looks like this:

 pre-commit  try-repo ../git-sumi git-sumi --verbose --all-files --hook-stage prepare-commit-msg --commit-msg-filename commit-msg
===============================================================================
Using config:
===============================================================================
repos:
-   repo: ../git-sumi
    rev: a54d2fffca82d70ab1638a38b4d889d71e441381
    hooks:
    -   id: git-sumi
===============================================================================
[INFO] Initializing environment for ../git-sumi.
[INFO] Installing environment for ../git-sumi.
[INFO] Once installed this environment will be reused.
[INFO] This may take a few minutes...
Lint commit message with git sumi........................................Failed
- hook id: git-sumi
- duration: 0.19s
- exit code: 1

💬 Input: "chore: test commit"
️❗ Header must contain exactly 1 emoji, found 0
️❗ Header does not match the required pattern: '^([\p{Emoji_Presentation}\p{Extended_Pictographic}](?:\u{FE0F})?\u{200D}?) \w'
❌ Error: Found 2 linting errors

I also tested it with a real commit in the test repo

[welpo]

Thank you! I've added a few questions/comments.

[TribuneX]

Thanks for the review. I amended the changes into the same commit.

[welpo]

Thank you! I've made a few changes.

Could you do a final review? If all looks good to you, I'll merge :)

[TribuneX]

One last remark. Otherwise looks good to me.