Add payment method icons to storefront navbar and cart.

Show BTC/XMR icons beside exchange rates and pay buttons.

backend/src/modules/storefrontCart/controllers/StorefrontCartController.ts

@@ -4,6 +4,7 @@ import { Throttle } from '@nestjs/throttler';
 import type { Request, Response } from 'express';
 import { throttleProfiles } from '../../../config/throttleProfiles';
 import type { Config } from '../../../types/Config';
+import { paymentMethodIconUrl } from '../../../consts/paymentMethodIconUrl';
 import { paymentMethodLabel } from '../../../consts/paymentMethodLabel';
 import { StorefrontExceptionFilter } from '../../storefrontCore/filters/StorefrontExceptionFilter';
 import { StorefrontCartCookieService } from '../../storefrontCore/services/StorefrontCartCookieService';
@@ -70,7 +71,8 @@ export class StorefrontCartController {
 
         const paymentMethods = enabledPaymentMethods.map(paymentMethod => ({
             paymentMethod,
-            paymentMethodLabel: paymentMethodLabel[paymentMethod]
+            paymentMethodLabel: paymentMethodLabel[paymentMethod],
+            iconUrl: paymentMethodIconUrl[paymentMethod]
         }));
 
         return res.render('cart-summary', {