This updates the minimal supported version of CMake to 3.16, which in turn enables us to use more CMake features and have a cleaner build system.
This is the version that provides most new features and also the one we use in our latest docker image for CI.
* provide light example for acting as zigbee coordinator, router and end-device
* remove unused componenent for example usage
* remove unused variable
* clean up unused header include for example
* update the license header
* update copyright
* Add readme for instruction adding esp-zboss-lib component
* esp-idf:update copy_right_check ignore file
* CI: fix the ci check error from pipeline
* sdkconfig: default set change for better user use
* use Button (BOOT) as switch input
* update the statemachine for debouncing
* esp-zboss-lib: support lib 0.0.2
* fix warning issue from example
