Luhncheck

- Optimized the code for better speed.
- Added more tests.
- Fixed typos in the documentation.

- Dropped support for Python 3.7 and added support for Python 3.12.

- Renamed the package to `luhncheck` and deprecated the old name.
- Renamed the `validate` function to `is_luhn`.
- Dropped support for Python 3.6 and added support for Python 3.11.
- Fixed location of type-checking marker file.
- Improved performance by using a generator for `sum` function.
- Removed badges from the package description.
- Updated development configurations and GitHub actions.
- Changed GitHub username back to dralshehri and updated related links.

- Fixed some typos.
- Updated linting configurations.

- Changed type hints for `number` and `prefix` arguments to prefer strings.
- Changed GitHub username to mhalshehri and updated related links.
- Updated development workflows and configurations.

- Improved type hints for `number` and `prefix` arguments.
- Improved handling of numbers containing hyphens or spaces.
- Updated documentation, tests, and usage examples.