Support ALTER INDEX expressions (or the same thing in ALTER TABLE)

[osdiab]

Description

Postgres allows a variety of alterations to be made to indexes but I can't find a built in way to do it with this library (can do it with pgm.sql() though).

Suggested solution

Create an interface for these, or support the equivalent commands in alterTable()

Alternative

No response

Additional context

I wanted to rename an index but then realized it wasn't there.

[Shinigami92]

Yeah, I see
Are you up for making a PR?
Start at least with the more simple one src/operations/indexes/renameIndex.ts

[osdiab]

I'll try to make time! Will comment here when I start working on a part of it, if I'm silent I haven't started.