run_cmake_test force to copy ww3_prtide

[mickaelaccensi]

Describe the bug
run_cmake_test always try to copy the non-SHRD exe from the build directory to path_e even if ww3_prtide was not compiled (switch TIDE not present in the switch file)

To Reproduce
when running almost the regtests

Expected behavior
in run_cmake_test, add a test if file exists
if [[ -e $path_build/install/bin/ww3_prtide ]] ; then
cp $path_build/install/bin/ww3_prtide $path_e/
fi

[JessicaMeixner-NOAA]

@mickaelaccensi good idea! Instead of just checking that it exists, should we only even try to copy if the TIDE switch is there, that way then if that does not exist we could have an error? Should we do that for all of the executables perhaps even? Have a list of exes that need to be copied, and if they don't exist, exit with an error?