Type of issue: feature request

Impact: API addition (no impact on existing code)

Development Phase: request | proposal

Other information
Bit tired of writing boiler plate to connect DecoupledIO for every tiny job, I started to feel it neccessary to have 'map' on DecoupledIO
What's just working is

object ChiselFunctor {
  implicit class DecoupledFuntor[T1 <: Bundle](d: DecoupledIO[T1]) {
    def map[T2 <: Data](f: T1 => T2) : DecoupledIO[T2] = {
      val new_bits = f(d.bits)
      val new_decoupled = Wire(Decoupled(chiselTypeOf(new_bits)))
      new_decoupled.ready := d.ready
      new_decoupled.valid := d.valid
      new_decoupled.bits := new_bits
      new_decoupled
    }
  }
}

And after writing, I thought It would be great if this kind of functionality can be integrated, managed, and supported officially.

thanks for reading!