Dynamically update masks and zones for cameras (#18359)

* Include config publisher in api

* Call update topic for passed topics

* Update zones dynamically

* Update zones internally

* Support zone and mask reset

* Handle updating objects config

* Don't put status for needing to restart Frigate

* Cleanup http tests

* Fix tests

frigate/config/base.py

@@ -1,5 +1,29 @@
+from typing import Any
+
 from pydantic import BaseModel, ConfigDict
 
 
 class FrigateBaseModel(BaseModel):
     model_config = ConfigDict(extra="forbid", protected_namespaces=())
+
+    def get_nested_object(self, path: str) -> Any:
+        parts = path.split("/")
+        obj = self
+        for part in parts:
+            if part == "config":
+                continue
+
+            if isinstance(obj, BaseModel):
+                try:
+                    obj = getattr(obj, part)
+                except AttributeError:
+                    return None
+            elif isinstance(obj, dict):
+                try:
+                    obj = obj[part]
+                except KeyError:
+                    return None
+            else:
+                return None
+
+        return obj