add relationomock.ts repository

packages/slackbot-proxy/src/repositories/relation-mock.ts

@@ -0,0 +1,10 @@
+import {
+  Repository, EntityRepository,
+} from 'typeorm';
+
+import { RelationMock } from '~/entities/relation-mock';
+
+@EntityRepository(RelationMock)
+export class RelationMockRepository extends Repository<RelationMock> {
+
+}