Add exclude field to MultipleEmitters rule.

[MaximSysoev]

Hi! Please consider the possibility of adding a field exclude to the MultipleEmitter rule.
I ran into a situation when I have composable function which is always called inside Column, but it is not ColumnScope extension. Like this:

abstract class Screen {
  @Composable
  internal fun Content() {
    // Some logic
    Column(...) {
      Ui()
    }
  }

  @Composable
  abscract fun Ui()
}

I would not like to change it to ColumnScope.Ui() and fix it throughout the project.
It would be nice to just exclude Ui method from rule checking.
Maybe there are some other cases. Anyway it seems pretty flexible.

What do you think about it?

[github-actions]

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[MaximSysoev]

@mrmans0n Hi! Could you help? Am I doing something wrong? CLA Assistant shows the error, but I have signed SLA.

[kenyee]

The rules have been moved here: https://github.com/mrmans0n/compose-rules
Because Twitter locked contributors out of this for a while...