support moving tables between tablespaces

### What's wrong?

H! We have two separate tablespaces: default(ssd with relatively small capacity for current data) and hdd (high capacity, historical data) and don't want to store columnar tables on ssd. But there is an error on moving columnar table:

```
alter table fact_events_1_2021 set tablespace hdd;
ОШИБКА: columnar_relation_copy_data not implemented
```

Is there a way to move this data or some plans to implement this feature?