Move FrameGeneratorCapturerConfig and Create family methods from frame_generator_capturer.h to the create_frame_generator_capturer.h Bug: b/272350185 Change-Id: I95674f5238ac0d0a5e395840bbab7f205b160c37 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/301220 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Commit-Queue: Artem Titov <titovartem@webrtc.org> Cr-Commit-Position: refs/heads/main@{#39850}