Read only arrays of scalars in PSyclone

There are a handful of PSyKAl-lite subroutines which exist because there isn't support in PSyclone for passing a read-only array of scalars. These subroutines are -

• invoke_spectral_2_cs_kernel_type
• invoke_heaviside_kernel_type
• invoke_temp_on_pres_kernel_type
• invoke_pres_interp_kernel_type
• invoke_geo_on_pres_kernel_type

and are all found in science/um_physics_interface/source/psy/psykal_lite_phys_mod. To reduce clutter in the issue I will just list the various scripts that these are called from -

• science/um_physics_interface/source/algorithm/stph_fp_main_alg_mod.x90
• science/um_physics_interface/source/algorithm/pres_lev_diags_alg_mod.x90
• science/um_physics_interface/source/algorithm/rh_diag_alg_mod.x90

There is also a PSyKAl-lite subroutine called invoke_atl_poly1d_vert_w3_recon_kernel_type in science/adjoint/source/psy/transport/mol/invoke_atl_poly1d_vert_w3_recon_mod.F90.

The corresponding PSyclone issue for this is PSyclone #1312.

Start with the listed PSyKAl-lite subroutines in science/um_physics_interface/source/psy/psykal_lite_phys_mod and invoke_atl_poly1d_vert_w3_recon_kernel_type in science/adjoint/source/psy/transport/mol/invoke_atl_poly1d_vert_w3_recon_mod.F90. Review PSyclone issue #1312 and the listed algorithm callers; done means the read-only scalar arrays no longer require these workaround subroutines while the affected callers remain valid.