implement RC delegations box related to issue 285

implementing change per issue #285 (closed)

api/common/useRcDelegations.ts

+import { useQuery } from "@tanstack/react-query";
+import fetchingService from "@/services/FetchingService";
+
+const useRcDelegations = (delegatorAccount: string, limit: number) => {
+  const {
+    data: rcDelegationsData,
+    isLoading: isRcDelegationsLoading,
+    isError: isRcDelegationsError,
+  } = useQuery({
+    queryKey: ["RcDelegations", delegatorAccount, limit],
+    queryFn: () => fetchingService.getRcDelegations(delegatorAccount, limit),
+    refetchOnWindowFocus: false,
+  });
+
+  return { rcDelegationsData, isRcDelegationsLoading, isRcDelegationsError };
+};
+
+export default useRcDelegations;
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