btstack_run_loop_embedded: use bool for trigger_event_received

license: update text

btstack_run_loop_embedded: implement execute on main thread

btstack_run_loop_embedded: implement trigger exit

btstack_run_loop_embedded: implement poll_data_sources_from_irq

remove btstack_run_loop_base.h include from run loop implementations and tests

btstack_run_loop_embedded: use run loop base (code)

MISRAC2012-Rule-14.4_d: use while(true) instead of while(1)

linked list/run loop: return true if item/data source/timer was removed

btstack_run_loop_embedded: remove duplicate instance variable

embedded: streamline timer management using btstack_time_delta

Use BTSTACK_FILE__ without __ prefix (MISRAC2012-Rule-21.1)

btstack_run_loop: don't call btstack_run_loop_remove_timer from platform implementation

fix wanring 'unreachable statement'

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

embedded: handle timers when system_time overruns

prefix embedded HAVE_

runloop: implement data source callbacks for embedded

runloop: pass enable/disable callbacks to run loop impl

runloop: pass callback type to data source process functions

runloop: pass callback type to data source process functions

prefix data_source_t and timer_source_t with btstack

prefix run_loop_ functions with btstack_

forgot to add files in earlier commit

run_loop_X.c/h -> run_loop_X.c/h