Renaming a projection

**Company or project name**

Machine Factor Technologies

**Use case**

Suppose there is a huge table with projection `A`, and we want to improve it. So, we create a new variant of this projection called `B` to test how it would work. After we confirmed that `B` improves performance of a new kind of queries (as well as old ones too), it is time to drop a projection `A`. At this point it would be natural to rename projection `B` to `A`. But there is no way to do it.

(It feels strange to have a `funny_projection_2` in your table when there is no `funny_projection` in it.)

**Describe the solution you'd like**

Implement a query like this:
```sql
ALTER TABLE table RENAME PROJECTION name TO new_name
```