Add indentation setting to indent to the same level as the previous form

[danielcompton]

We're using [clairvoyant] to trace namespaces, and we need to wrap everything in a trace-forms macro. Currently this indents everything one level. It would be great if we could have a Cursive indentation setting to indent to the same level as the previous form.

So

(trace-forms {:tracer (tracer :color "green")}

  (defn filter-fn-for
    [showing-kw]
    (case showing-kw
      :active (complement :done)
      :done :done
      :all identity))
)

is instead indented as

(trace-forms {:tracer (tracer :color "green")}

(defn filter-fn-for
  [showing-kw]
  (case showing-kw
    :active (complement :done)
    :done :done
    :all identity))
)

[imrekoszo]

This is still open in 1.12.4-2022.2 as discussed with @cursive-ide in a slack thread.

There are similar macros out in the wild, https://github.com/cgrand/macrovich is an example. Some devs might prefer their top-level comment blocks to be formatted like this (I sometimes do).

In my experience these special wrapper macros mostly appear as top-level forms, and could be nested:

(def foo :foo)

(wrapper-1

(def bar :bar)

)

(wrapper-2
(wrapper-3

(def baz :baz)

))