Add setup script

.gitignore

+build/
+dist/
+*.egg-info/
+
 __pycache__/
 .ipynb_checkpoints/

setup.py

+import os
+
+import pkg_resources
+from setuptools import setup, find_packages
+
+setup(
+    name="RealESRGAN",
+    py_modules=["RealESRGAN"],
+    version="1.0",
+    description="",
+    author="Sberbank AI, Xintao Wang",
+    url='https://github.com/ai-forever/Real-ESRGAN',
+    packages=find_packages(include=['RealESRGAN']),
+    install_requires=[
+        str(r)
+        for r in pkg_resources.parse_requirements(
+            open(os.path.join(os.path.dirname(__file__), "requirements.txt"))
+        )
+    ]
+)
\ No newline at end of file