WIP: Resolve "YAML Generation"

Closes #1

fpga_device_manager/hass.py

-class Trigger:
-    pass
+from typing import Iterable, Dict
+from dataclasses import dataclass
 
 
+@dataclass
 class Action:
-    pass
+    service: str
+    entity_id: str
 
 
-class Condition:
-    pass
+@dataclass
+class Automation:
+    alias: str
+    triggers: Iterable[Dict]
+    actions: Iterable[Action]
+    conditions: Iterable[Dict] = None
+    description: str = ""
 
+    @property
+    def dict(self):
+        dict_ = {"alias": self.alias,
+                 "triggers": self.triggers,
+                 "actions": [action.__dict__ for action in self.actions]
+                 }
 
-class Automation:
-    def __init__(self):
-        pass
+        if self.conditions:
+            dict_["conditions"] = self.conditions
+
+        if self.description:
+            dict_["description"] = self.description
+
+        return dict_