* add devcontainer support
* chore(devcontainer): install test requirements
* chore: add pre-commit
* fix format of pre-commit config file
* add licenses for the new files
* Apply suggestions from code review
* move requirements-dev.txt to inside .devcontainer
* specify files for ruff
* update CONTRIBUTING.md
* chore(devcontainer): use standard image, no docker build
* docs: format CONTRIBUTING.md (automatic by IDE)
* Update .devcontainer/devcontainer.json
* remove extraneous edits in CONTRIBUTING.md
