P5 7617 cleanup market and locale (#10)

* Minor fixes

* Cleanup with adding Locale type

* Add locales to test

src/types/market-locale-types.ts

@@ -5,3 +5,10 @@ export interface Market {
   currency: string;
   priceAdjustment: number;
 }
+
+export interface Locale {
+  id: number;
+  value: string;
+  fallbackId: number;
+  name: string;
+}