some final fixes before the demo

pkgs/ui/src/components/hooks/useGetEntityById.tsx

@@ -0,0 +1,19 @@
+import { useContext } from "react";
+import { AppContext } from "./useAppContext";
+
+const useGetEntityByName = (nameOrDid: string) => {
+  const { data } = useContext(AppContext);
+  const allEntities = data.allEntities;
+
+  if (!allEntities) {
+    return { entity: undefined, isLoading: true };
+  }
+
+  const entity = allEntities.find(
+    (entity) => entity.name === nameOrDid || entity.did === nameOrDid
+  );
+
+  return { entity, isLoading: false };
+};
+
+export default useGetEntityByName;