Netmeasure

Added

- Add demonstration video to README
- Add usage instructions to README

Fixed

- Fix missing space in latency cli output
- Fix incorrect download size units in download measurement

Fixed

- Fix missing error tag in latency cli

Fixed

- Update poetry-publish to fix broken pypi publish workflow

Fixed
- Use env vars as per modern pattern in publish workflow

Fixed
- Use master branch for publish workflow

Fixed
- README badges