Add crossmobile package (#5732)

packages/crossmobile.rb

+require 'package'
+
+class Crossmobile < Package
+  description 'CrossMobile is a software tool to develop truly native multi-platform cross mobile applications for iOS, Android, Windows Mobile and Desktop'
+  homepage 'https://crossmobile.org/'
+  version '3.4.0'
+  license 'LGPL-3.0'
+  compatibility 'x86_64'
+  source_url 'https://github.com/crossmob/CrossMobile/releases/download/v3.4.0/CrossMobile-3.4.0.x86_64.appimage'
+  source_sha256 '295f65a8ef3d115061749370ec0a9eb68424e9b96d208acd91aa18818e3fa134'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  depends_on 'jdk8'
+  depends_on 'sommelier'
+
+  def self.build
+    cross = <<~EOF
+    #!/bin/bash
+    cd #{CREW_PREFIX}/share/crossmobile
+    ./AppRun "$@"
+    EOF
+    IO.write('crossmobile.sh', cross)
+  end
+
+  def self.install
+    FileUtils.mkdir_p "#{CREW_DEST_PREFIX}/bin"
+    FileUtils.mkdir_p "#{CREW_DEST_PREFIX}/share/crossmobile"
+    FileUtils.install 'crossmobile.sh', "#{CREW_DEST_PREFIX}/bin/crossmobile", mode: 0755
+    FileUtils.mv Dir.glob('*'), "#{CREW_DEST_PREFIX}/share/crossmobile"
+  end
+
+  def self.postinstall
+    puts "\nType 'crossmobile' to get started.\n".lightblue
+  end
+end