Add setup.py script

setup.py

@@ -0,0 +1,45 @@
+import os
+
+try:
+    from Cython.Build import cythonize
+except (ImportError, NameError):
+    # skip cythonizing
+    cythonize = lambda x: 0
+from setuptools import setup, Extension
+
+with open("README.md", "r+") as f:
+    long_description = f.read()
+
+setup(
+    name="pybase122",
+    version="0.1.0",
+    description="pybase122: Encode and decode base122 data quickly and easily!",
+    license="The Unlicense",
+    url="https://github.com/Theelx/pybase122",
+    long_description=long_description,
+    long_description_content_type="text/markdown",
+    classifiers=[
+        "Intended Audience :: Developers",
+        "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 :: 3.11",
+    ],
+    setup_requires=["Cython>=3.0.0a11"],
+    python_requires=">=3.5",
+    ext_modules=cythonize(
+        Extension(
+            "cybase122",
+            ["cybase122.pyx"],
+            language="c++",
+            # consider including -march=native if it makes a speed difference
+            # and if portability isn't a concern for users
+            extra_compile_args=["-Wno-sign-compare", "-flto", "-pipe"],
+            compiler_directives={'language_level': 3, "infer_types": True}
+        )
+    ),
+)