feat: add basic data model support

wuttjamaican will provide a default data model with minimal tables;
it's assumed each custom app will extend this model with other tables

tests/db/model/test_base.py

@@ -0,0 +1,25 @@
+# -*- coding: utf-8; -*-
+
+from unittest import TestCase
+
+try:
+    import sqlalchemy as sa
+    from wuttjamaican.db.model import base as model
+except ImportError:
+    pass
+else:
+
+    class TestUUIDColumn(TestCase):
+
+        def test_basic(self):
+            column = model.uuid_column()
+            self.assertIsInstance(column, sa.Column)
+
+
+    class TestSetting(TestCase):
+
+        def test_basic(self):
+            setting = model.Setting()
+            self.assertEqual(str(setting), "")
+            setting.name = 'foo'
+            self.assertEqual(str(setting), "foo")