feat(core): Add two new queries to get public payment and shipping methods

packages/core/src/api/resolvers/shop/shop-payment-methods.resolver.ts

@@ -7,7 +7,7 @@ import { Ctx } from '../../decorators/request-context.decorator';
 
 @Resolver()
 export class ShopPaymentMethodsResolver {
-    constructor(private paymentMethodService: PaymentMethodService) {}
+    constructor(readonly paymentMethodService: PaymentMethodService) {}
 
     @Query()
     async activePaymentMethods(@Ctx() ctx: RequestContext): Promise<PaymentMethod[]> {

packages/core/src/api/resolvers/shop/shop-shipping-methods.resolver.ts

@@ -7,7 +7,7 @@ import { Ctx } from '../../decorators/request-context.decorator';
 
 @Resolver()
 export class ShopShippingMethodsResolver {
-    constructor(private shippingMethodService: ShippingMethodService) {}
+    constructor(readonly shippingMethodService: ShippingMethodService) {}
 
     @Query()
     async activeShippingMethods(@Ctx() ctx: RequestContext): Promise<ShippingMethod[]> {