[thci] add setCcmState method in thci (#7179)
[thci] add setCcmState method in thci (#7179)

This commit adds API method setCcmState to THCI file.
jwhui/openthread,abtink/openthread,srickardti/openthread,abtink/openthread,openthread/openthread,srickardti/openthread,abtink/openthread,jwhui/openthread,srickardti/openthread,jwhui/openthread,srickardti/openthread,openthread/openthread,jwhui/openthread,openthread/openthread,abtink/openthread,openthread/openthread