Improve Notifications (#16453)

* backend

* frontend

* add notification config at camera level

* camera level notifications in dispatcher

* initial onconnect

* frontend

* backend for suspended notifications

* frontend

* use base communicator

* initialize all cameras in suspended array and use 0 for unsuspended

* remove switch and use select for suspending in frontend

* use timestamp instead of datetime

* frontend tweaks

* mqtt docs

* fix button width

* use grid for layout

* use thread and queue for processing notifications with 10s timeout

* clean up

* move async code to main class

* tweaks

* docs

* remove warning message

frigate/config/camera/camera.py

@@ -25,6 +25,7 @@ from .genai import GenAICameraConfig
 from .live import CameraLiveConfig
 from .motion import MotionConfig
 from .mqtt import CameraMqttConfig
+from .notification import NotificationConfig
 from .objects import ObjectConfig
 from .onvif import OnvifConfig
 from .record import RecordConfig
@@ -85,6 +86,9 @@ class CameraConfig(FrigateBaseModel):
     mqtt: CameraMqttConfig = Field(
         default_factory=CameraMqttConfig, title="MQTT configuration."
     )
+    notifications: NotificationConfig = Field(
+        default_factory=NotificationConfig, title="Notifications configuration."
+    )
     onvif: OnvifConfig = Field(
         default_factory=OnvifConfig, title="Camera Onvif Configuration."
     )