Add dav1d package (#3458)

Add pre-built binaries

packages/dav1d.rb

+require 'package'
+
+class Dav1d < Package
+  description '**dav1d** is a new **AV1** cross-platform **d**ecoder, open-source, and focused on speed and correctness.'
+  homepage 'https://code.videolan.org/videolan/dav1d'
+  version '0.4.0'
+  source_url 'http://get.videolan.org/dav1d/0.4.0/dav1d-0.4.0.tar.xz'
+  source_sha256 '2553b2e65081c0ec799c11a752ea43ad8f2d11b2fb36a83375972d1a00add823'
+
+  binary_url ({
+    aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/dav1d-0.4.0-chromeos-armv7l.tar.xz',
+     armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/dav1d-0.4.0-chromeos-armv7l.tar.xz',
+       i686: 'https://dl.bintray.com/chromebrew/chromebrew/dav1d-0.4.0-chromeos-i686.tar.xz',
+     x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/dav1d-0.4.0-chromeos-x86_64.tar.xz',
+  })
+  binary_sha256 ({
+    aarch64: '8f6ba95b0a42b98fa23e0550db70779205531b101932b67e06458030f4d2b712',
+     armv7l: '8f6ba95b0a42b98fa23e0550db70779205531b101932b67e06458030f4d2b712',
+       i686: '8808245f9c03815ada09d3cdc5cde3844050f77fbfae8577808dd6d0783067e6',
+     x86_64: 'adb925f84ce45e4276ca13f686ad3588aec5821217e9d042b0190143482ad80b',
+  })
+
+  depends_on 'meson' => :build
+  depends_on 'nasm' => :build
+
+  def self.build
+    system 'meson build --buildtype release'
+    system 'ninja -C build'
+  end
+
+  def self.install
+    system "DESTDIR=#{CREW_DEST_DIR} ninja -C build install"
+  end
+end