zopfli: add new package (#31879)

Co-authored-by: James A Zilberman <jazrc@rit.edu>
Co-authored-by: qwertos <qwertos@users.noreply.github.com>

var/spack/repos/builtin/packages/zopfli/package.py

@@ -0,0 +1,23 @@
+# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack.package import *
+
+
+class Zopfli(CMakePackage):
+    """Zopfli Compression Algorithm is a compression library programmed
+    in C to perform very good, but slow, deflate or zlib compression."""
+
+    homepage = "https://github.com/google/zopfli"
+    url = "https://github.com/google/zopfli/archive/refs/tags/zopfli-1.0.3.tar.gz"
+
+    variant("shared", default=False, description="Build shared libraries")
+
+    version("1.0.3", sha256="e955a7739f71af37ef3349c4fa141c648e8775bceb2195be07e86f8e638814bd")
+
+    def cmake_args(self):
+        args = [self.define_from_variant("ZOPFLI_BUILD_SHARED", "shared")]
+
+        return args