refac: SammoAPI에 타입 지정

hwe/ts/defs/API/Betting.ts

@@ -0,0 +1,7 @@
+import type { ValidResponse, BettingInfo } from "@/defs";
+
+export type BettingListResponse = ValidResponse & {
+    bettingList: Record<number, Omit<BettingInfo & { totalAmount: number }, "candidates">>;
+    year: number;
+    month: number;
+  };