chore(): Reorganize modules (#7210)

**What**
Move all modules to the modules directory

packages/modules/pricing/src/schema/index.ts

@@ -0,0 +1,16 @@
+export const schema = `
+type PriceSet {
+  id: String!
+  money_amounts: [MoneyAmount]
+}
+
+type MoneyAmount {
+  id: String!
+  currency_code: String
+  amount: Float
+  min_quantity: Float
+  max_quantity: Float
+}
+`
+
+export default schema