cmake HELICS examples

Exawind/amr-wind CMakeLists.txt :218 

find_package(HELICS 3 REQUIRED)

gridlab-d/gridlab-d connection/CMakeLists.txt :29 

FIND_PACKAGE(HELICS 3 REQUIRED CONFIG HINTS ${GLD_HELICS_DIR} ${HELICS_DIR} $ENV{GLD_HELICS_DIR} $ENV{HELICS_DIR})