osu-lazer: add unfreeRedistributable license
osu-lazer: add unfreeRedistributable license

The unfree BASS library is a dependency of the osu framework, which
includes the shared library in its repository. The library for the
system runtime is included in the build output.

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs