feat: added support of distributed sql for interactive mode
Redirected output of interactive mode with \set language sql
from
box.execute to pico.sql. This allows to perform sql queries on cluster,
while box.execute does it locally.
Closes picodata/picodata/picodata#334
NO_DOC=picodata internal patch NO_CHANGELOG=picodata internal patch NO_TEST=picodata internal patch