Improved input parser

[nakib]

The current input file parser based on namelist requires an intermediate variable before reading into the fields of a data type. Need a better method.

One option could be to internally generate an internal_input.nml file where a self% is prepended to every Namelist member. After this step, this file can be directly read into self%<member>.

[nakib]

I think the associate construct can be used to remove the redundant declarations currently done in all the nml style input parsers.

[nakib]

This would definitely be more elegant than the first idea and is also in the functional style (like let in Lisp).

[nakib]

After exhausting all functional and object oriented options, I think the following is the way to go: https://github.com/nakib/nml4types/

[nakib]

But the above still won't work for types containing allocatable components.