ci: add pre-commit config for codespell

[pixelatedkisses]

What do these changes do?

This PR introduces a .pre-commit-config.yaml file at the root of the repository to automate formatting, and spell checking. It sets up:

1. Standard hooks: trailing-whitespace and end-of-file-fixer to keep repository formatting consistently clean.
2. codespell hook: To automatically catch typos in code and documentation before commits are finalized.
3. An extensive inline --ignore-words-list and folder exclusion pattern.

Are there changes in behavior for the user?

This change is strictly restricted to the developer workflow and CI environment

Is it a substantial burden for the maintainers to support this?

No. It eliminates the need for maintainers to manually review and flag basic formatting errors during future PR reviews.

Related issue number

Relates to #144

Checklist

• I think the code is well written
• Unit tests for the changes exist
• Documentation reflects the changes