Use setup.cfg for readme and licensing

setup.cfg

@@ -1,12 +1,20 @@
 [metadata]
 name = pylint
 license = GPL-2.0-or-later
+license_file = COPYING
 description = python code static checker
+keywords = static code analysis linter python lint
+long_description = file: README.rst
+long_description_content_type = text/x-rst; charset=UTF-8
 author = Python Code Quality Authority
 author_email = code-quality@python.org
 url = https://github.com/PyCQA/pylint
 project_urls =
     What's New=https://pylint.pycqa.org/en/latest/whatsnew/
+    Bug tracker=https://github.com/PyCQA/pylint/issues
+    User manual=http://pylint.pycqa.org/en/latest/
+    Contributing=http://pylint.pycqa.org/en/latest/development_guide/contribute.html
+    Technical references=http://pylint.pycqa.org/en/latest/technical_reference/index.html
 classifiers =
     Development Status :: 6 - Mature
     Environment :: Console

setup.py

@@ -12,13 +12,9 @@ __pkginfo__: Dict[str, Any] = {}
 with open(HERE / "pylint/__pkginfo__.py", encoding="UTF-8") as f:
     exec(f.read(), __pkginfo__)  # pylint: disable=exec-used
 
-with open(HERE / "README.rst", encoding="UTF-8") as f:
-    long_description = f.read()
-
 with open(HERE / "requirements_docs.txt", encoding="UTF-8") as f:
     doc_extra_requires = f.readlines()
 
-
 with open(HERE / "requirements_test_min.txt", encoding="UTF-8") as f:
     test_requires = f.readlines()
 
@@ -34,7 +30,6 @@ for requirement_file in DEV_REQUIREMENTS_FILES:
 if __name__ == "__main__":
     setup(
         version=__pkginfo__["__version__"],
-        long_description=long_description,
         tests_require=test_requires,
         extras_require={
             ':sys_platform=="win32"': ["colorama"],