feat(core-flows,medusa,types,utils): add rules to promotion endpoints + workflow (#6692)

* feat(core-flows,medusa,types,utils): add rules to promotion endpoints + workflow

* chore: fix specs

* chore: move input type to types package

packages/utils/src/promotion/index.ts

@@ -47,3 +47,9 @@ export enum PromotionActions {
   REMOVE = "remove",
   REPLACE = "replace",
 }
+
+export enum RuleType {
+  RULES = "rules",
+  TARGET_RULES = "target_rules",
+  BUY_RULES = "buy_rules",
+}