feat: unify alerts into one plugin, channels, rules and inbox

docker/bundled-plugins.json

@@ -8,6 +8,10 @@
       "id": "ai",
       "source": "workspace"
     },
+    {
+      "id": "alerts",
+      "source": "workspace"
+    },
     {
       "id": "automations",
       "source": "workspace"