Adds the spack recipe for building the pynpm python package (#42582)

* Adds the spack recipe for building the pynpm python package

* fix license header

* Update var/spack/repos/builtin/packages/py-pynpm/package.py

Co-authored-by: Adam J. Stewart <ajstewart426@gmail.com>

---------

Co-authored-by: Adam J. Stewart <ajstewart426@gmail.com>

var/spack/repos/builtin/packages/py-pynpm/package.py

@@ -0,0 +1,22 @@
+# Copyright 2013-2024 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 PyPynpm(PythonPackage):
+    """Python interface to your NPM and package.json."""
+
+    homepage = "https://pynpm.readthedocs.io/en/latest/"
+    pypi = "pynpm/pynpm-0.2.0.tar.gz"
+    git = "https://github.com/inveniosoftware/pynpm"
+    maintainers("jeremyfix")
+
+    license("BSD-3-Clause")
+
+    version("0.2.0", sha256="212a1e5f86fe8b790945dd856682c6dcd8eddc6f8803a51e7046fe427d7f801b")
+
+    depends_on("py-setuptools", type="build")
+    depends_on("py-babel@2.9:", type="build")