History: Add HistoryEntry

With this the backend now can hold a history entry.
Also included in this commit are some minor changes to tests and services so they can still work.

Signed-off-by: Philip Molares <philip.molares@udo.edu>

src/auth/auth.service.spec.ts

@@ -28,6 +28,7 @@ describe('AuthService', () => {
       id: '1',
       identities: [],
       ownedNotes: [],
+      historyEntries: [],
       updatedAt: new Date(),
       userName: 'Testy',
     };