Add typing on views layer

Co-authored-by: geovanne97 <geovannessaraiva97@gmail.com>

src/model/ValidDeposit.ts

@@ -1,10 +1,10 @@
 import type { BigNumber } from "ethers";
 
 export type ValidDeposit = {
-    depositID: BigNumber;
-    blockNumber: number;
-    remaining: string;
-    seller: string;
-    pixKey: (string | undefined);
-    pixTarget?: string;
-};
+  depositID: BigNumber;
+  blockNumber: number;
+  remaining: string;
+  seller: string;
+  pixKey: string;
+  pixTarget?: string;
+};