Update setup.py with classifiers

setup.py

@@ -66,4 +66,25 @@
     package_dir={'rocksdb': 'rocksdb'},
     packages=find_packages('.'),
     ext_modules=cythonize([rocksdb_extension]),
+    classifiers=[
+        "Intended Audience :: Developers",
+        "Natural Language :: English",
+        "License :: OSI Approved :: BSD License",
+        "Programming Language :: Cython",
+        "Programming Language :: Python",
+        "Programming Language :: Python :: 3 :: Only",
+        "Programming Language :: Python :: 3.6",
+        "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
+        "Programming Language :: Python :: Implementation :: CPython",
+        "Operating System :: POSIX",
+        "Operating System :: POSIX :: Linux",
+        "Operating System :: MacOS :: MacOS X",
+        "Topic :: Database",
+        "Development Status :: 7 - Inactive",
+    ],
 )