Add qtfm package (#3299)

* Add qtfm package

* Add pre-built binaries

packages/qtfm.rb

+require 'package'
+
+class Qtfm < Package
+  description 'Lightweight desktop independent Qt file manager'
+  homepage 'https://qtfm.eu/'
+  version '6.1.9'
+  source_url 'https://github.com/rodlie/qtfm/archive/6.1.9.tar.gz'
+  source_sha256 'ff7ab3244999653fd7f8fb9dc1bd06a599d18faaa7c17b1bc4e2d8830ba9feb5'
+
+  binary_url ({
+    aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/qtfm-6.1.9-chromeos-armv7l.tar.xz',
+     armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/qtfm-6.1.9-chromeos-armv7l.tar.xz',
+       i686: 'https://dl.bintray.com/chromebrew/chromebrew/qtfm-6.1.9-chromeos-i686.tar.xz',
+     x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/qtfm-6.1.9-chromeos-x86_64.tar.xz',
+  })
+  binary_sha256 ({
+    aarch64: 'ea056bde713fb33aca3e3517ec75c56522e94a2427b93fa443a8a84f1194dd41',
+     armv7l: 'ea056bde713fb33aca3e3517ec75c56522e94a2427b93fa443a8a84f1194dd41',
+       i686: 'd5bf9ef2fbcb40e70cfc555e4db5da5221e1943fcf25e92e7e7c78aa780384d0',
+     x86_64: '4f2c3627f10189a5b801e05b048039b6ee7884f211c655694d96ad1351e240e1',
+  })
+
+  depends_on 'qtbase'
+  depends_on 'imagemagick7'
+  depends_on 'ffmpeg'
+  depends_on 'sommelier'
+
+  def self.build
+    Dir.mkdir 'build'
+    Dir.chdir 'build' do
+      system 'qmake',
+             "PREFIX=#{CREW_PREFIX}",
+             "LIBDIR=#{CREW_LIB_PREFIX}",
+             'CONFIG+=with_includes',
+             'CONFIG+=with_magick',
+             'CONFIG+=with_ffmpeg',
+             'CONFIG+=sharedlib',
+             '..'
+      system 'make', "-j#{CREW_NPROC}"
+    end
+  end
+
+  def self.install
+    Dir.chdir 'build' do
+      system 'make', "INSTALL_ROOT=#{CREW_DEST_DIR}", 'install'
+    end
+  end
+end