Switch to setuptools

Apart from just being the modern thing to do, this allows bdist_wheel
to work, which is important for installing with our existing container
python-builder tooling.

Change-Id: Id884f7db1dcb59406e6f08cd9ec904fe3a32d2e9

pyproject.toml

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

setup.py

@@ -1,5 +1,5 @@
+from setuptools import setup
 
-from distutils.core import setup
 setup(name='MeetBot',
       description='IRC Meeting Helper',
       version='0.1.4',