feat(fortran): Added fortran bindings

Building of the C API GridFire can now be used from fotran using the
gridfire_mod fortran module. This exposes the same, limited, set of
funcitonality that the C API does.

meson.build

@@ -24,6 +24,10 @@ project('GridFire', ['c', 'cpp', 'fortran'], version: 'v0.7.0_rc1', default_opti
 add_project_arguments('-fvisibility=default', language: 'cpp')
 
 message('Found CXX compiler: ' + meson.get_compiler('cpp').get_id())
+message('Found FORTRAN compiler: ' + meson.get_compiler('fortran').get_id())
+message('C++ standard set to: ' + get_option('cpp_std'))
+message('Fortran standard set to: ' + get_option('fortran_std'))
+
 
 if meson.get_compiler('cpp').get_id() == 'clang'
     # We disable these because of CppAD