Revert "Delete setup.py"

This reverts commit 60ad70a.

ichor_lib_subpackage/setup.py

@@ -0,0 +1,17 @@
+from setuptools import setup, find_namespace_packages
+
+setup(
+    name='ichor_lib',
+    version="3.0.0",
+    author="Matthew Burn, Yulian Manchev",
+    author_email="matthew.burn@postgrad.manchester.ac.uk, yulian.manchev@postgrad.manchester.ac.uk",
+    project_urls = {"github": "https://github.com/popelier-group/ICHOR"},
+    classifiers=[
+        "Programming Language :: Python :: 3.7",
+        "Operating System :: OS Independent",
+    ],
+    description="ICHOR library subpackage.",
+    packages=find_namespace_packages(include=['ichor*']),
+    python_requires=">=3.7",
+    install_requires=["pandas"]
+)