Add license "MulanPSL-2.0" (#103)

Co-authored-by: Dustin Ingram <[email protected]>

Author: iyanging

src/trove_classifiers/__init__.py

@@ -280,6 +280,7 @@
     "License :: OSI Approved :: Mozilla Public License 1.0 (MPL)",
     "License :: OSI Approved :: Mozilla Public License 1.1 (MPL 1.1)",
     "License :: OSI Approved :: Mozilla Public License 2.0 (MPL 2.0)",
+    "License :: OSI Approved :: Mulan Permissive Software License v2 (MulanPSL-2.0)",
     "License :: OSI Approved :: Nethack General Public License",
     "License :: OSI Approved :: Nokia Open Source License",
     "License :: OSI Approved :: Open Group Test Suite License",