Allow to indent matchers of Collectors

[moritz-makandra]

We have some collector operators with a lot of matchers therefore we do indentation:

Ressource <<|
  tag == 'foo'
  or tag == 'bar'
|>>

The linter complains unless we remove the indentation of the matchers

This PR adds support for the matchers of the spaceship operators

[alexjfisher]

Sorry, it's been a while. Would you like to rebase and resolve conflicts? Looks like a worthwhile improvement.