feat: add basic "create order" feature, docs, tests

just the package API docs so far, narrative will come later

tests/cli/test_install.py

@@ -0,0 +1,18 @@
+# -*- coding: utf-8; -*-
+
+from unittest.mock import MagicMock, patch
+
+from wuttjamaican.testing import ConfigTestCase
+from wuttjamaican.install import InstallHandler
+
+from sideshow.cli import install as mod
+
+
+class TestInstall(ConfigTestCase):
+
+    def test_run(self):
+        ctx = MagicMock(params={})
+        ctx.parent.wutta_config = self.config
+        with patch.object(InstallHandler, 'run') as run:
+            mod.install(ctx)
+            run.assert_called_once_with()