Make unpack_aecdump optionally unpack render/capture call order
Make unpack_aecdump optionally unpack render/capture call order

It is stored in a text file as a stream of 'r' and 'c' characters - render and capture.
This is the format output by APM with apm_debug_dump on, and it is readable by audioproc_f.

Bug: webrtc:9252
Change-Id: I01e9e104ed7e3fb45e623730343a0c2addc81d1b
Reviewed-on: https://webrtc-review.googlesource.com/75502
Reviewed-by: Oleh Prypin <5baa3e04f9bd6ba7a2a4b56625a3c84f19237cdb@webrtc.org>
Reviewed-by: Alex Loiko <999d0b481e5703ad7006f0848e249f8b2c3f29bd@webrtc.org>
Commit-Queue: Sam Zackrisson <b1a93beadfe1d2f7f0106ee02b6ffcdc950aa103@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#23213}
TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc