MAINT add python_requires in setup.py

Author: glemaitre

setup.py

@@ -52,7 +52,9 @@
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
 ]
+PYTHON_REQUIRES = ">=3.8"
 INSTALL_REQUIRES = (min_deps.tag_to_packages["install"],)
 EXTRAS_REQUIRE = {
     key: value for key, value in min_deps.tag_to_packages.items() if key != "install"