euler_1d Program

Sequences the session-based driver calls:

1. Parse CLI — resolve_cli_namelist (defaults to input.nml)
2. Create — solver_session_create
3. Load config — solver_session_load_namelist
4. Initialise — solver_session_initialize
5. Run — solver_session_run_to_end
6. Write result — solver_session_write_result
7. Destroy — solver_session_destroy