btstack_run_loop: fix typos in comments

btstack_run_loop: support uint64_t timer variable
btstack_run_loop: cleanup whitespaces

btstack_run_loop: provide details on btstack_run_loop_execute_on_main_thread semantics

license: update text

docs: use @return instead of @returns

btstack_run_loop: add list of callbacks and provide btstack_run_loop_base_execute_callbacks

btstack_run_loop: extend run loop api

MISRAC2012-Rule-8.3_b: match function declaration and definition

src: add title to header files

moved btstack_run_loop_base into btstack_run_loop to allow for refactored run loops without client build changes

btstack_run_loop: support de-init

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

Use FILENAME_H as include guard (MISRAC2012-Rule-21.1)

run_loop: avoid anonymous union

btstack_run_loop: add btstack_run_loop_set_data_source_handle and btstack_run_loop_get_data_source_handle (for windows)

windows: add void * handle to data _source

posix: use ms timeouts in run loop and also in hci.c

prefix embedded HAVE_

prefix POSIX related HAVE_ defines

runloop: pass enable/disable callbacks to run loop impl

runloop: enable callback for all data sources

runloop: add data source callback type to ds handler

runloop: pass callback type to data source process functions

runloop: set data source fd by new setter

runloop: add callback type enum, add flags to btstack_data_source_t