Increase maximum event sub_label length to 100 characters (#6350)

* Increase maximum sub label length to 100 characters and update corresponding fields in models and API

* black format...

frigate/http.py

@@ -375,13 +375,13 @@ def set_sub_label(id):
     else:
         new_sub_label = None
 
-    if new_sub_label and len(new_sub_label) > 20:
+    if new_sub_label and len(new_sub_label) > 100:
         return make_response(
             jsonify(
                 {
                     "success": False,
                     "message": new_sub_label
-                    + " exceeds the 20 character limit for sub_label",
+                    + " exceeds the 100 character limit for sub_label",
                 }
             ),
             400,

frigate/models.py

@@ -14,7 +14,7 @@ from playhouse.sqlite_ext import JSONField
 class Event(Model):  # type: ignore[misc]
     id = CharField(null=False, primary_key=True, max_length=30)
     label = CharField(index=True, max_length=20)
-    sub_label = CharField(max_length=20, null=True)
+    sub_label = CharField(max_length=100, null=True)
     camera = CharField(index=True, max_length=20)
     start_time = DateTimeField()
     end_time = DateTimeField()