Add tvb-storage and tvb-framework Spack packages

Some of the TVB jupyter notebooks available in the Collab depend on these 2 packages, so it would be great to make them available as well.

packages/tvb-framework/package.py

+# Copyright 2013-2020 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 import *
+
+
+class TvbFramework(PythonPackage):
+    """
+    "The Virtual Brain" Project (TVB Project) has the purpose of offering modern tools to the Neurosciences community,
+    for computing, simulating and analyzing functional and structural data of human brains, brains modeled at the level
+    of population of neurons.
+    """
+
+    homepage = "https://www.thevirtualbrain.org/"
+    pypi = 'tvb-framework/tvb-framework-2.3.tar.gz'
+
+    maintainers = ['paulapopa']
+
+    version('2.3', '0f3386135cdbd80bfd7d31f2e056b015a27ff6d081492db16274deed581b0aac')
+    version('2.2', 'dfcdecee7325dd9b75eb63ddca56d046a4a6f3a20a9bc71a609315b6f151d68b')
+    version('2.0.10', '082c8c742680804a62fd20b80d0ac0fa7421b0e1cd3a54293ff2fec2abc4f15d')
+    version('2.0.9', '8a3af6d52e057db901d38c524d4bf1c7f78e793b990b27950d0765b8edf03c61')
+    version('2.0.8', '95a8585b3095eecbdc8ca389269471a350b6876e732f62c260d75b615d10a237')
+
+    # python_requires
+    depends_on('python@3.8:', type=('build', 'run'))
+
+    # setup_requires
+    depends_on('py-setuptools', type='build')
+
+    # install_requires
+    depends_on('py-alembic', type=('build', 'run'))
+    depends_on('py-cherrypy', type=('build', 'run'))
+    # depends_on('py-formencode', type=('build', 'run'))
+    # depends_on('py-gevent', type=('build', 'run'))
+    depends_on('py-h5py', type=('build', 'run'))
+    depends_on('py-jinja2', type=('build', 'run'))
+    depends_on('py-nibabel', type=('build', 'run'))
+    depends_on('py-numpy', type=('build', 'run'))
+    depends_on('py-pandas', type=('build', 'run'))
+    depends_on('py-pillow', type=('build', 'run'))
+    depends_on('py-psutil', type=('build', 'run'))
+    depends_on('py-requests', type=('build', 'run'))
+    depends_on('py-scikit-learn', type=('build', 'run'))
+    depends_on('py-scipy', type=('build', 'run'))
+    depends_on('py-simplejson', type=('build', 'run'))
+    depends_on('py-six', type=('build', 'run'))
+    depends_on('py-sqlalchemy', type=('build', 'run'))
+    depends_on('tvb-data', type='run')
+    depends_on('tvb-library', type=('build', 'run'))
+    depends_on('tvb-storage', type=('build', 'run'), when='@2.3')
+    depends_on('py-werkzeug', type=('build', 'run'))
+