feat: sync implementation for the user entity (#16234)

* ci: print out typeorm generation changes

* feat: sync implementation for the user entity

wip

---------

Co-authored-by: Jason Rasmussen <jason@rasm.me>

server/test/repositories/sync.repository.mock.ts

@@ -0,0 +1,13 @@
+import { SyncRepository } from 'src/repositories/sync.repository';
+import { RepositoryInterface } from 'src/types';
+import { Mocked, vitest } from 'vitest';
+
+export const newSyncRepositoryMock = (): Mocked<RepositoryInterface<SyncRepository>> => {
+  return {
+    getCheckpoints: vitest.fn(),
+    upsertCheckpoints: vitest.fn(),
+    deleteCheckpoints: vitest.fn(),
+    getUserUpserts: vitest.fn(),
+    getUserDeletes: vitest.fn(),
+  };
+};