feat: architecture, some problems to solve before the machine can step

test/test_mealy.py

@@ -0,0 +1,10 @@
+import unittest
+
+from src.snanosm.mealy import Machine
+
+
+class TestMachine(unittest.TestCase):
+
+    def test_init(self):
+        m = Machine()
+        self.assertIsNotNone(m)