Allow editable installs with pip (not defining dependencies yet)

pyproject.toml

@@ -0,0 +1,3 @@
+[build-system]
+requires = ["setuptools>=42"]
+build-backend = "setuptools.build_meta"

setup.cfg

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+[metadata]
+name = nsdf
+version = 0.0.1
+author = NSDF
+author_email = [email protected]
+description = NSDF Python Libraries
+long_description = file: ReadMe.md
+long_description_content_type = text/markdown
+url = https://github.com/nsdf-fabric/nsdf-data-catalog
+project_urls =
+    Bug Tracker = https://github.com/nsdf-fabric/nsdf-data-catalog
+classifiers =
+    Programming Language :: Python :: 3
+    License :: OSI Approved :: MIT License
+    Operating System :: OS Independent
+
+[options]
+package_dir =
+    =nsdf
+packages = find:
+python_requires = >=3.6
+
+[options.packages.find]
+where = nsdf

setup.py

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+#!/usr/bin/env python
+
+# This is shim to allow editable installs also with older versions of pip.
+
+import setuptools
+
+if __name__ == "__main__":
+    setuptools.setup()