feat: adds constructor and messages list to IterableEmbeddedPlacement

Author: Evan Greer

src/embedded/classes/IterableEmbeddedPlacement.ts

@@ -1,11 +1,16 @@
+import { IterableEmbeddedMessage } from './IterableEmbeddedMessage';
+
 /**
  * Iterable embedded placement
  * Contains placement id and the associated embedded messages
  */
 export class IterableEmbeddedPlacement {
   readonly placementId: number;
 
-  constructor(placementId: number) {
+  readonly messages: IterableEmbeddedMessage[];
+
+  constructor(placementId: number, messages: IterableEmbeddedMessage[]) {
     this.placementId = placementId;
+    this.messages = messages;
   }
 }