Add banner package

Banner is an implementation of the traditional Unix-program used to display
large characters.

Tested as working on XE500C13-K01US.

packages/banner.rb

+require 'package'
+
+class Banner < Package
+  description 'An implementation of the traditional Unix-program used to display large characters.'
+  homepage 'http://shh.thathost.com/pub-unix/#banner'
+  version '1.3.2'
+  source_url 'http://shh.thathost.com/pub-unix/files/banner-1.3.2.tar.gz'
+  source_sha256 '0dc0ac0667b2e884a7f5ad3e467af68cd0fd5917f8c9aa19188e6452aa1fc6d5'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  depends_on 'shhmsg'
+  depends_on 'shhopt'
+
+  def self.build
+    system 'make'
+  end
+
+  def self.install
+    system 'make', "DESTDIR=#{CREW_DEST_DIR}", 'install'
+  end
+end