Fix offer retrieval method and add GDPR acknowledgment

Return the result from `getOffersById` method to fix route handling. Add `id` field in offers selection query and introduce `gdpr_acknowledgement` to the user model and mock data for GDPR compliance.

prisma/schema.prisma

@@ -86,6 +86,8 @@ model User {
   created_at       DateTime @default(now())
   updated_at       DateTime @default(now()) @updatedAt
 
+  gdpr_acknowledgement DateTime @default(now())
+
   Role          Role            @relation(fields: [roleId], references: [id])
   UserHasCrypto UserHasCrypto[]
   TradeGiven    Trade[]         @relation("Giver")

src/offer/offer.controller.ts

@@ -58,6 +58,6 @@ export class OfferController {
 	@HttpCode(HttpStatus.FOUND)
 	@Get("crypto/:cryptoId")
 	getOffersById(@GetUser() user: User,@Param("cryptoId") cryptoId: string) {
-		this.offerService.getOffersById(user.id, cryptoId)
+		return this.offerService.getOffersById(user.id, cryptoId)
 	}
 }

src/offer/offer.service.ts

@@ -44,6 +44,7 @@ export class OfferService {
 				created_at: "desc",
 			},
 			select: {
+				id: true,
 				amount: true,
 				created_at: true,
 				id_user: true,

src/utils/tests/user-mock.ts

@@ -11,6 +11,7 @@ export const getMockUser = (): User => ({
 	isActive: true,
 	created_at: new Date(),
 	updated_at: new Date(),
+	gdpr_acknowledgement: new Date(),
 	roleId: "user",
 	dollarAvailables: 1000,
 });