feat(pricing, types, utils, medusa-sdk): Pricing Module Setup + Currency (#4860)

What:

- Setups the skeleton for pricing module
- Creates service/model/repository for currency model
- Setups types
- Setups DB
- Moved some utils to a common place

RESOLVES CORE-1477
RESOLVES CORE-1476

packages/medusa-test-utils/src/id-map.js

@@ -1,19 +1,19 @@
-import randomize from "randomatic";
+import randomize from "randomatic"
 
 class IdMap {
-  ids = {};
+  ids = {}
 
   getId(key, prefix = "", length = 10) {
     if (this.ids[key]) {
-      return this.ids[key];
+      return this.ids[key]
     }
 
-    const id = `${prefix && prefix + "_"}${randomize("Aa0", length)}`;
-    this.ids[key] = id;
+    const id = `${prefix && prefix + "_"}${randomize("Aa0", length)}`
+    this.ids[key] = id
 
-    return id;
+    return id
   }
 }
 
-const instance = new IdMap();
-export default instance;
+const instance = new IdMap()
+export default instance