port: use btstack_strcpy and btstack_cat instead of strcpy/strcat

test/hfp: fix build

test/hfp: fix compile

test/hfp: handle plc of sco frames with 120 samples

test/sbc+hfp: support original PacketLogger .pklg files with little endian len

test/hfp: fix hci parser

test/sbc+hfp: use O_RDONLY to read packet log on windows

cvsd_plc: add printfs for octave file to analyse history buffer

test/hfp: pklg_cvsd_test creates in_raw, in_plc, out wav files

btstack_cvsd_plc: count zero frames separately

test/hfp: minimal check for SCO handle

test/hfp: pklg_cvsd test using packet logs