fix(api): add JWT scheme to @ApiBearerAuth and fix Prisma 7 extensions config

- Add 'JWT' scheme name to @ApiBearerAuth() in payments & subscriptions
  controllers so Swagger UI correctly links to the JWT security definition
- Add postgresqlExtensions preview feature to Prisma schema for v7 compat

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/api/src/modules/payments/presentation/controllers/payments.controller.ts

@@ -45,7 +45,7 @@ export class PaymentsController {
     private readonly queryBus: QueryBus,
   ) {}
 
-  @ApiBearerAuth()
+  @ApiBearerAuth('JWT')
   @ApiOperation({ summary: 'Create a new payment' })
   @ApiResponse({ status: 201, description: 'Payment created successfully' })
   @ApiResponse({ status: 400, description: 'Bad request' })
@@ -90,7 +90,7 @@ export class PaymentsController {
     );
   }
 
-  @ApiBearerAuth()
+  @ApiBearerAuth('JWT')
   @ApiOperation({ summary: 'Get payment status by ID' })
   @ApiResponse({ status: 200, description: 'Payment status retrieved' })
   @ApiResponse({ status: 401, description: 'Unauthorized' })
@@ -104,7 +104,7 @@ export class PaymentsController {
     return this.queryBus.execute(new GetPaymentStatusQuery(id, user.sub));
   }
 
-  @ApiBearerAuth()
+  @ApiBearerAuth('JWT')
   @ApiOperation({ summary: 'List transactions for the authenticated user' })
   @ApiResponse({ status: 200, description: 'Transactions retrieved' })
   @ApiResponse({ status: 401, description: 'Unauthorized' })
@@ -119,7 +119,7 @@ export class PaymentsController {
     );
   }
 
-  @ApiBearerAuth()
+  @ApiBearerAuth('JWT')
   @ApiOperation({ summary: 'Refund a payment (admin only)' })
   @ApiResponse({ status: 201, description: 'Refund initiated successfully' })
   @ApiResponse({ status: 401, description: 'Unauthorized' })