New Package: librespot - Open Source Spotify Connect library

packages/librespot.rb

+require 'package'
+
+class Librespot < Package
+  description 'Open Source Spotify connect library'
+  homepage 'https://github.com/librespot-org/librespot'
+  version '0.1.3'
+  compatibility 'all'
+  source_url 'https://github.com/librespot-org/librespot/archive/v0.1.3.tar.gz'
+  source_sha256 '2d28a63c6dda08ecbc1245c7cfe34c9b3b29e8c5304f4aa8b65aedb899056b25'  
+  
+  depends_on 'rust' => :build
+  depends_on 'alsa_lib'
+  depends_on 'alsa_utils'
+  
+  def self.build
+    system 'cargo build --release --no-default-features --features "alsa-backend"'
+  end
+
+  def self.install
+    system "install -Dm755 target/release/librespot #{CREW_DEST_PREFIX}/bin/librespot"
+  end
+end