HPCC-12542 Add ECLWatch UI to call resetquerystats

On the Query Details page, a 'Reset' button is added to
send WsWorkunits an HTTP request of WUQuerysetQueryAction
with Action='ResetQueryStats'. After the request is
received, the WsWorkunits resets query stats using
control:resetquerystats.

Signed-off-by: wangkx <kevin.wang@lexisnexis.com>
(Minor) In general we would use "===" here and double quotes for the string.