feat(core-flows,utils): add payment + shipment workflow events (#7749)

packages/core/utils/src/payment/events.ts

@@ -0,0 +1,4 @@
+export const PaymentEvents = {
+  CAPTURED: "payment.captured",
+  REFUNDED: "payment.refunded",
+}

packages/core/utils/src/payment/index.ts

@@ -1,4 +1,5 @@
 export * from "./abstract-payment-provider"
+export * from "./events"
 export * from "./payment-collection"
 export * from "./payment-session"
 export * from "./webhook"