[Media] musicfree: a cross-platform music downloader implemented in Rust

musicfree is a music download tool written in pure Rust. It supports multiple platforms, including Windows, macOS, Unix, and Android. There are two versions available: a CLI version at musicfree and a Tauri version at musicfree-tauri.

Currently, it supports downloading single videos from YouTube and Bilibili, downloading playlists, and cover images.