refactor: change methods ENTER|EXIT critical (#1140)

refactor: change methods ENTER|EXIT critical (#1140)

refactor: change methods ENTER|EXIT critical

The read and write of BaseType_t are atomic for a number of ports
and therefore, do not require taskENTER_CRITICAL/taskEXIT_CRITICAL.
This PR introduces portBASE_TYPE_ENTER_CRITICAL and
portBASE_TYPE_EXIT_CRITICAL which default to  taskENTER_CRITICAL
and taskEXIT_CRITICAL. The APIs that read/write BaseType_t are updated
to use these new macros.

The next change would to be to define portBASE_TYPE_ENTER_CRITICAL and
portBASE_TYPE_EXIT_CRITICAL to nothing for ports where BaseType_t
read and write are atomic.

Signed-off-by: guilherme giacomo simoes <trintaeoitogc@gmail.com>