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/pricing/integration-tests/utils/database.ts

@@ -0,0 +1,18 @@
+import { TestDatabaseUtils } from "medusa-test-utils"
+
+import * as PricingModels from "@models"
+
+const pathToMigrations = "../../src/migrations"
+const mikroOrmEntities = PricingModels as unknown as any[]
+
+export const MikroOrmWrapper = TestDatabaseUtils.getMikroOrmWrapper(
+  mikroOrmEntities,
+  pathToMigrations
+)
+
+export const MikroOrmConfig = TestDatabaseUtils.getMikroOrmConfig(
+  mikroOrmEntities,
+  pathToMigrations
+)
+
+export const DB_URL = TestDatabaseUtils.getDatabaseURL()