btstack_run_loop_freertos: use run loop base (code)

btstack_run_loop_embedded: use run loop base (code)

btstack_run_loop_posix: use run loop base (code)

hci usb: update list of known devices for libusb and winusb

posix: btstack_uart_posix replaces btstack_uart_block_posix

h4 posix ports: use btstack_uart_posix instead of btstack_uart_block_posix

posix: add SLIP-enabled btstack_uart_posix

btstack_uart_block_posix: drain output before changing baud rate

posix: add implementation of btstack_sco_transport for i2s test bridge

libusb: add new 0x000b pid of Zephyr HCI USB firmware, init sm_init(), disable SCO if there's only one interface

fix warnings for log_info/printf

posix: enumerate timers in in btstack_run_loop_posix_dump_timer

update python scripts to python3

add missing default switch cases

avoid warning for set but unused variables when log_info and log_error are disabled

daemon: return 0 from main()

java: fix Util.storeBytes

bnep_lwip: add bnep_lwip_connect to establish BNEP connection and manage lwIP network interface

btstack_tlv_posix: add btstack_tlv_posix_deinit

windows: fix test in usb_close

btstack_uart_block_windows: allow to call open again

hci: provide hci_opcode_t and daemon_opcode_t definitions and use in hci_cmd.c and daemon_cmd.c

test/hfp: fix compile

btstack_audio_portaudio: minimal volume control by multiplying samples with volume^4

btstack_audio: add set_volume() to sink and set_gain() to source interfaces (nop implementations for portaudio and embedded)