fix: Shared pkgs importeren

common/src/interfaces/answer.ts

@@ -0,0 +1,16 @@
+import { UserDTO } from './user';
+import { QuestionDTO, QuestionId } from './question';
+
+export interface AnswerDTO {
+    author: UserDTO;
+    toQuestion: QuestionDTO;
+    sequenceNumber: number;
+    timestamp: string;
+    content: string;
+}
+
+export interface AnswerId {
+    author: string;
+    toQuestion: QuestionId;
+    sequenceNumber: number;
+}