example: register for events after setting up the stack, register for hci events after sm_init()

examples: unify local names and append BD_ADDR

remove Remove Ctrl-C from usage

fix warnings: mostly sign-compare

a2dp source demo: cleanup

hfp hf: add CLI_PRESENTATION_CAPABILITY to feature list in SDP record, fixes +CLIP for iOS

hfp hf: fix typo, add event to demo

btstack_stdin: provide console input in callback

btstack_stdin: replace stdin_support.[ch] with btstack_stdin.h and platform implementations

more missing breaks

example/hfp_hf: add missing break

tool: add update_filename.py that adds __BTSTACK_FILE__ to every .c file for use with debug output instead of __FILE__

hfp: ENABLE_HFP_WIDE_BAND_SPEECH required for HFP mSBC

fix unused parameters warning

stdin: add btstack_stdin_read() and use in examples

hfp: use btstack_atoi

streamline compilation for non-posix targets

example/hfp: use two columns for help menu

example/hfp: clean up listing of supported codecs

examples: register hci event handler

examples: register hci event handler

HFP: Emit codec event after SCO connection is established, CODECS event is deleted, codec added as param in AUDIO_CONN event

hfp_hf_demo: delete duplicate code

hfp_ag/hfp_hf: list suported codecs

hfp hf api change: use acl_handle instead of device addr