7f6b998787
- Updated `flake.nix` to define a new Python application `lidarr-mb-gap` for identifying missing albums on MusicBrainz. - Improved development shell environment by including a Python environment with necessary packages. - Added new source files: `__init__.py`, `html_report.py`, and `main.py` to implement core functionality and HTML report generation. - Introduced `pyproject.toml` for better package management and project metadata. - Enhanced user instructions in the shell hook for running the application.