Preliminary support for destinationUuid field

ts/types/UUID.ts

@@ -8,6 +8,12 @@ import { strictAssert } from '../util/assert';
 export type UUIDStringType =
   `${string}-${string}-${string}-${string}-${string}`;
 
+export enum UUIDKind {
+  ACI = 'ACI',
+  PNI = 'PNI',
+  Unknown = 'Unknown',
+}
+
 export const isValidUuid = (value: unknown): value is UUIDStringType =>
   typeof value === 'string' &&
   /^[0-9A-F]{8}-[0-9A-F]{4}-4[0-9A-F]{3}-[89AB][0-9A-F]{3}-[0-9A-F]{12}$/i.test(