Merge branch 'feature/freertos_timer_task_optional' into 'master'

freertos: save up to 4 kB of RAM if timer functionality is not used by the app

See merge request espressif/esp-idf!10721

components/freertos/tasks.c

@@ -5137,3 +5137,8 @@ TickType_t uxReturn;
 	#include "tasks_test_access_functions.h"
 #endif
 
+/* If timers.c is not referenced anywhere, don't create the timer task to save RAM */
+BaseType_t  __attribute__((weak)) xTimerCreateTimerTask( void )
+{
+	return pdPASS;
+}