feat(medusa,pricing,types): added get endpoints for pricing rule types (#6678)

what:

- adds list endpoint for rule types
- adds get endpoint for rule types

packages/pricing/src/models/money-amount.ts

@@ -6,9 +6,8 @@ import {
   Filter,
   Index,
   ManyToMany,
-  ManyToOne,
-  OneToOne,
   OnInit,
+  OneToOne,
   OptionalProps,
   PrimaryKey,
   Property,
@@ -30,7 +29,11 @@ class MoneyAmount {
   @PrimaryKey({ columnType: "text" })
   id!: string
 
-  @Property({ columnType: "text", nullable: true })
+  @Property({
+    columnType: "text",
+    nullable: true,
+    index: "IDX_money_amount_currency_code",
+  })
   currency_code: string | null
 
   @ManyToMany({

packages/pricing/src/models/rule-type.ts

@@ -32,6 +32,21 @@ class RuleType {
   @ManyToMany(() => PriceSet, (priceSet) => priceSet.rule_types)
   price_sets = new Collection<PriceSet>(this)
 
+  @Property({
+    onCreate: () => new Date(),
+    columnType: "timestamptz",
+    defaultRaw: "now()",
+  })
+  created_at: Date
+
+  @Property({
+    onCreate: () => new Date(),
+    onUpdate: () => new Date(),
+    columnType: "timestamptz",
+    defaultRaw: "now()",
+  })
+  updated_at: Date
+
   @BeforeCreate()
   onCreate() {
     this.id = generateEntityId(this.id, "rul-typ")