Extra indentation for hanging \case statements with (&)

[ocharles]

Is your feature request related to a problem? Please describe.

I have the following code:

{-# language TemplateHaskell #-}

foo = 
  runBlah
    & handeError @Foo \case
        X -> Y
        A -> B
    & handeError @Bar \case
        U -> V

Currently Ormolu formats this as:

{-# LANGUAGE TemplateHaskell #-}

foo =
  runBlah
    & handeError @Foo \case
      X -> Y
      A -> B
    & handeError @Bar \case
      U -> V

I consider this suboptimal, and the lost indentation makes this hard to read.

Describe the solution you'd like

Ormolu indents each case:

{-# LANGUAGE TemplateHaskell #-}

foo =
  runBlah
    & handeError @Foo \case
        X -> Y
        A -> B
    & handeError @Bar \case
        U -> V

[ocharles]

I've also noticed

{-# language TemplateHaskell #-}

foo = 
  runBlah
    & fmap \foo ->
        bar

becomes

{-# LANGUAGE TemplateHaskell #-}

foo =
  runBlah
    & fmap \foo ->
      bar

which is a similar problem, so maybe this is more about (&) in general