setup.py: Add metadata, including python_requires 2.7

setup.py

@@ -22,6 +22,42 @@
     "author_email":     "pygame@pygame.org",
     "description":      "Python Game Development",
     "long_description": LONG_DESCRIPTION,
+    "project_urls": {
+        "Documentation": "https://pygame.org/docs",
+        "Bug Tracker": "https://github.com/pygame/pygame/issues",
+        "Source": "https://github.com/pygame/pygame",
+        "Twitter": "https://twitter.com/pygame_org",
+    },
+    "classifiers": [
+        "Development Status :: 6 - Mature",
+        "License :: OSI Approved :: GNU Library or Lesser General Public License (LGPL)",
+        "Programming Language :: Assembly",
+        "Programming Language :: C",
+        "Programming Language :: Cython",
+        "Programming Language :: Objective C",
+        "Programming Language :: Python",
+        "Programming Language :: Python :: 2",
+        "Programming Language :: Python :: 2.7",
+        "Programming Language :: Python :: 3",
+        "Programming Language :: Python :: 3.5",
+        "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 :: Implementation :: CPython",
+        "Programming Language :: Python :: Implementation :: PyPy",
+        "Topic :: Multimedia :: Graphics",
+        "Topic :: Multimedia :: Graphics :: Capture :: Digital Camera",
+        "Topic :: Multimedia :: Graphics :: Capture :: Screen Capture",
+        "Topic :: Multimedia :: Graphics :: Graphics Conversion",
+        "Topic :: Multimedia :: Graphics :: Viewers",
+        "Operating System :: Microsoft :: Windows",
+        "Operating System :: POSIX",
+        "Operating System :: Unix",
+        "Operating System :: MacOS",
+    ],
+    "python_requires": '>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*',
 }
 
 import re