Ability to align elvis operators

It would be great if the following can be considered.

Example input:

```
args.a  = rc.apple ?: "";
args.b  = rc.b ?: "";
args.c. = rc.camel ?: "";
```

When formatted, it will align the elvis operators:

```
args.a  = rc.apple   ?: "";
args.b  = rc.b       ?: "";
args.c  = rc.camel   ?: "";

```

Currently I don't seem to see any workarounds to enable this from the docs.
