Add back setup.py to see if it helps GitHub CI stuff

setup.py

@@ -0,0 +1,110 @@
+#!/usr/bin/python
+# coding=utf-8
+"""
+Setuptools setup file, used to install or test 'cmd2'
+"""
+import codecs
+
+from setuptools import (
+    setup,
+)
+
+DESCRIPTION = "cmd2 - quickly build feature-rich and user-friendly interactive command line applications in Python"
+
+with codecs.open('README.md', encoding='utf8') as f:
+    LONG_DESCRIPTION = f.read()
+
+CLASSIFIERS = list(
+    filter(
+        None,
+        map(
+            str.strip,
+            """
+Development Status :: 5 - Production/Stable
+Environment :: Console
+Operating System :: OS Independent
+Intended Audience :: Developers
+Intended Audience :: System Administrators
+License :: OSI Approved :: MIT License
+Programming Language :: Python
+Programming Language :: Python :: 3
+Programming Language :: Python :: 3.8
+Programming Language :: Python :: 3.9
+Programming Language :: Python :: 3.10
+Programming Language :: Python :: 3.11
+Programming Language :: Python :: 3.12
+Programming Language :: Python :: Implementation :: CPython
+Topic :: Software Development :: Libraries :: Python Modules
+""".splitlines(),
+        ),
+    )
+)  # noqa: E128
+
+SETUP_REQUIRES = ['setuptools >= 34.4', 'setuptools_scm >= 3.0']
+
+INSTALL_REQUIRES = [
+    'pyperclip >= 1.6',
+    'wcwidth >= 0.1.7',
+]
+
+EXTRAS_REQUIRE = {
+    # Windows also requires pyreadline3 to ensure tab completion works
+    ":sys_platform=='win32'": ['pyreadline3'],
+    # Extra dependencies for running unit tests
+    'test': [
+        "gnureadline; sys_platform=='darwin'",  # include gnureadline on macOS to ensure it is available in nox env
+        'codecov',
+        'coverage',
+        'pytest>=4.6',
+        'pytest-cov',
+        'pytest-mock',
+    ],
+    # development only dependencies:  install with 'pip install -e .[dev]'
+    'dev': [
+        'codecov',
+        'doc8',
+        'flake8',
+        'black',
+        'isort',
+        'invoke',
+        'mypy',
+        'nox',
+        "pytest>=4.6",
+        'pytest-cov',
+        'pytest-mock',
+        'sphinx',
+        'sphinx-rtd-theme',
+        'sphinx-autobuild',
+        'twine>=1.11',
+    ],
+    'validate': [
+        'flake8',
+        'mypy',
+        'types-setuptools',
+    ],
+}
+
+PACKAGE_DATA = {
+    'cmd2': ['py.typed'],
+}
+
+setup(
+    name="cmd2",
+    use_scm_version={'git_describe_command': 'git describe --dirty --tags --long --exclude plugin-*'},
+    description=DESCRIPTION,
+    long_description=LONG_DESCRIPTION,
+    long_description_content_type='text/markdown',
+    classifiers=CLASSIFIERS,
+    author='Catherine Devlin',
+    author_email='[email protected]',
+    url='https://github.com/python-cmd2/cmd2',
+    license='MIT',
+    platforms=['any'],
+    package_data=PACKAGE_DATA,
+    packages=['cmd2'],
+    keywords='command prompt console cmd',
+    python_requires='>=3.8',
+    setup_requires=SETUP_REQUIRES,
+    install_requires=INSTALL_REQUIRES,
+    extras_require=EXTRAS_REQUIRE,
+)