- Set up project structure with src, tests, and examples directories
- Added README.md with project overview and usage instructions
- Included LICENSE file (MIT License)
- Implemented core functionality in filesize_cli/main.py
- Added initial tests in tests/test_main.py
- Configured setup.py and pyproject.toml for packaging
- Created .gitignore to exclude unnecessary files
- Set up GitLab CI/CD pipeline with .gitlab-ci.yml
- Added example files in the examples/ directory for testing purposes

Signed-off-by: Kolja Nolte <kolja.nolte@gmail.com>