Adding setup.py to installer (#1038)

This is mostly to allow brew Formula automation.

installer/setup.py

@@ -0,0 +1,33 @@
+from setuptools import setup
+
+setup(
+    name='microk8s',
+    version='1.0.0',
+    url='https://github.com/ubuntu/microk8s',
+    license='Apache-2.0',
+    author='Joe Borg',
+    author_email='[email protected]',
+    description='MicroK8s is a small, fast, single-package Kubernetes for developers, IoT and edge.',
+    packages=[
+        'cli',
+        'common',
+        'vm_providers',
+        'vm_providers._multipass',
+        'vm_providers.repo'
+    ],
+    install_requires=[
+        'setuptools',
+        'click~=7.0',
+        'jsonschema==2.5.1',
+        'progressbar33==2.4',
+        'requests==2.20.0',
+        'requests_unixsocket==0.1.5',
+        'simplejson==3.8.2',
+        'toml==0.10.0',
+        'wheel'
+    ],
+    platforms='any',
+    entry_points={'console_scripts': [
+        'microk8s=cli.microk8s:cli',
+    ]}
+)