Refactor video quality analysis to create individual metric plots instead of a combined dashboard. Update README to reflect new project name "Frame Arena" and enhance description of features and functionality.

Initial commit of the FrameLens project, including core application logic in app.py, configuration files (.python-version, pyproject.toml, requirements.txt), example video data (data.json), and necessary assets (.DS_Store). The application supports frame-by-frame video comparison using various metrics.