Create output_settings table

[daanvaningen]

Name, Type, Description,

id, int, unique identifier,
output_time_step, int, result write interval,
start_time, int, simulation time to start writing results
end_time, int, simulation time to stop writing results
variables, List[str], comma separated str of variables to write to result files,
create_results_netcdf, boolean, toggles result file creation,
create_aggregate_netcdf, boolean, toggles aggregate file creation,
create_water_quality_netcdf, boolean, toggles water quality file creation,