This commit updates the real_time_stats example to use the configurable
configRUN_TIME_COUNTER_TYPE. The CONFIG_FREERTOS_RUN_TIME_COUNTER_TYPE_U64 is
enabled by the example by default to demonstrate its usage.
Note: Also cleaned up redundant configs in sdkconfig.ci
The following commit updates the first half of the the system
example README files. Some other changes were also made:
* Updated base_mac_address example
* Moved contents in GCOV README to GCOV docs
* Some *main.c file names updated
* Updated example README template
The following commit adds a real time stats example demonstrating how to
obtain task CPU usage statistics over a period of time, as opposed to the current
run time stats in FreeRTOS which measures task CPU usage as a percentage of
total system run time.
