Create graphviz.rb (#1806)

* Create graphviz.rb

* Update graphviz.rb

* Update graphviz.rb

Fix it

* Update graphviz.rb

* Update graphviz.rb

packages/graphviz.rb

+require 'package'
+
+class Graphviz < Package
+  description 'Graphviz is open source graph visualization software.'
+  homepage 'https://www.graphviz.org/'
+  version '2.40.1'
+  source_url 'https://gitlab.com/graphviz/graphviz/repository/67cd2e5121379a38e0801cc05cce5033f8a2a609/archive.tar.bz2'
+  source_sha256 '8dddc80b4194b17c1a5bc1cc7b5e001e9a3ec27272287dc16f278c736a29a9b9'
+
+  depends_on 'automake' => :build
+  depends_on 'pango'
+  depends_on 'flex'
+  depends_on 'gdk_pixbuf'
+  depends_on 'libxrender'
+  depends_on 'poppler'
+
+  def self.build
+    system "./autogen.sh"
+    system "./configure --prefix=#{CREW_PREFIX} --libdir=#{CREW_LIB_PREFIX}"
+    system "make"
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end