lots of typing fixes

app/models/alarms.py

@@ -1,5 +1,6 @@
 import enum
 from datetime import datetime
+from typing import List, Any
 
 from app import db
 
@@ -11,7 +12,7 @@ class AlarmState(enum.Enum):
     CRITICAL = 3
 
 
-class Alarm(db.Model):
+class Alarm(db.Model):  # type: ignore
     id = db.Column(db.Integer, primary_key=True)
     target = db.Column(db.String(60), nullable=False)
     group_id = db.Column(db.Integer, db.ForeignKey("group.id"))
@@ -30,18 +31,18 @@ class Alarm(db.Model):
     bridge = db.relationship("Bridge", back_populates="alarms")
 
     @classmethod
-    def csv_header(cls):
+    def csv_header(cls) -> List[str]:
         return [
             "id", "target", "group_id", "origin_id", "proxy_id", "bridge_id", "alarm_type",
             "alarm_state", "state_changed", "last_updated", "text"
         ]
 
-    def csv_row(self):
+    def csv_row(self) -> List[Any]:
         return [
             getattr(self, x) for x in self.csv_header()
         ]
 
-    def update_state(self, state: AlarmState, text: str):
+    def update_state(self, state: AlarmState, text: str) -> None:
         if self.alarm_state != state or self.state_changed is None:
             self.state_changed = datetime.utcnow()
         self.alarm_state = state