API-26: Creating endpoint for RaPla changes

src/models/dhbw-rapla-changes/changes/Event.interface.ts

@@ -0,0 +1,9 @@
+import {Change} from './Change.interface';
+
+export interface Event {
+    event_id: string;
+    event_uid: string;
+    latest_event_summary: string;
+    latest_start_date: Date;
+    changes: Change[];
+}