Semantic Search Triggers (#18969)

* semantic trigger test

* database and model

* config

* embeddings maintainer and trigger post-processor

* api to create, edit, delete triggers

* frontend and i18n keys

* use thumbnail and description for trigger types

* image picker tweaks

* initial sync

* thumbnail file management

* clean up logs and use saved thumbnail on frontend

* publish mqtt messages

* webpush changes to enable trigger notifications

* add enabled switch

* add triggers from explore

* renaming and deletion fixes

* fix typing

* UI updates and add last triggering event time and link

* log exception instead of return in endpoint

* highlight entry in UI when triggered

* save and delete thumbnails directly

* remove alert action for now and add descriptions

* tweaks

* clean up

* fix types

* docs

* docs tweaks

* docs

* reuse enum

frigate/api/defs/request/events_body.py

@@ -2,6 +2,8 @@ from typing import List, Optional, Union
 
 from pydantic import BaseModel, Field
 
+from frigate.config.classification import TriggerType
+
 
 class EventsSubLabelBody(BaseModel):
     subLabel: str = Field(title="Sub label", max_length=100)
@@ -45,3 +47,9 @@ class EventsDeleteBody(BaseModel):
 
 class SubmitPlusBody(BaseModel):
     include_annotation: int = Field(default=1)
+
+
+class TriggerEmbeddingBody(BaseModel):
+    type: TriggerType
+    data: str
+    threshold: float = Field(default=0.5, ge=0.0, le=1.0)