Update the User entity to be nullable (#371)

- Update the user entity to be nullable in the typescript side
- The migration script already did this, but if you have the `DB_SYNC` environment variable sync it then it doesn't get set to nullable

#353

Reviewed-on: #371
Reviewed-by: VylpesTester <tester@vylpes.com>
Co-authored-by: Ethan Lane <ethan@vylpes.com>
Co-committed-by: Ethan Lane <ethan@vylpes.com>

src/database/entities/app/User.ts

@@ -13,7 +13,7 @@ export default class User extends AppBaseEntity {
     @Column()
         Currency: number;
 
-    @Column()
+    @Column({ nullable: true })
         LastUsedDaily?: Date;
 
     public AddCurrency(amount: number) {