Android Retrofit FlowCallAdapterFactory library.

The FlowCallAdapterFactory is Retrofit CallAdapter.Factory.

• Can use coroutine flow.
• example

• val retrofit = Retrofit.Builder()
      .baseUrl(server.url("/"))
      .addConverterFactory(StringConverterFactory())
      .addCallAdapterFactory(FlowCallAdapterFactory())
      .build()
  
  val service = retrofit.create(Service::class.java)