feat(core-flows,medusa,order,types): update orders (#10373)

**What**
- add order update endpoint
- add workflows and steps for updating orders
- add `registerChanges` method to Order module + workflow step

---

CLOSES CMRC-633

packages/core/utils/src/core-flows/events.ts

@@ -12,6 +12,8 @@ export const CustomerWorkflowEvents = {
 }
 
 export const OrderWorkflowEvents = {
+  UPDATED: "order.updated",
+
   PLACED: "order.placed",
   CANCELED: "order.canceled",
   COMPLETED: "order.completed",

packages/core/utils/src/order/order-change-action.ts

@@ -15,4 +15,5 @@ export enum ChangeActionType {
   WRITE_OFF_ITEM = "WRITE_OFF_ITEM",
   REINSTATE_ITEM = "REINSTATE_ITEM",
   TRANSFER_CUSTOMER = "TRANSFER_CUSTOMER",
+  UPDATE_ORDER_PROPERTIES = "UPDATE_ORDER_PROPERTIES",
 }