refactor(schema): extract public event definitions (#33579)

packages/schema/src/models-dev.ts

@@ -0,0 +1,9 @@
+export * as ModelsDev from "./models-dev"
+
+import { define, inventory } from "./event"
+
+const Refreshed = define({
+  type: "models-dev.refreshed",
+  schema: {},
+})
+export const Event = { Refreshed, Definitions: inventory(Refreshed) }