Add Service and MqttSubscriber classes

- Create utils dir and move utils.py there

motor_passo/utils/service.py

@@ -0,0 +1,17 @@
+import threading
+import logging
+
+
+class Service(threading.Thread):
+
+    def __init__(self, name: str = "(sem nome)"):
+        super().__init__()
+        log = logging.getLogger(__name__).getChild(self.__class__.__name__)
+
+        self.daemon = True
+        self.name = name
+        self._l = log.getChild(self.name)
+
+    def start(self) -> None:
+        self._l.debug(f"Iniciando serviço {self.name}")
+        super().start()