Module-inline with callee scope symbols

[sergisiso]

Currently Module-inline fails the validation for subroutines that contain references to other callee scope symbols.

There are 2 solutions to this:

• Add imports in the caller scope to these symbols (but this only works if they are public)
• Localise all the symbols inside the module-inlined routine. E.g. copying if it is a parameter, or in-lining it if it is a call to a subroutine.

This is the GPU bottleneck in the timesteping region after annotating the LFRic infrastructure:

! Transformation Error: Cannot apply KernelModuleInlineTrans to Kernel 'ffsl_flux_xy_panel_remap_code' because it accesses data 
!& from its outer scope: PSyclone SymbolTable error: Kernel 'ffsl_flux_xy_panel_remap_code' contains accesses to 
!& 'ffsl_flux_xy_panel_remap_1d' which is declared in the callee module scope.