Merge updates for NOAH-MP Interface

[akashdhruv]

In this PR I have formalized the NoahMP C++ interface so it can be used by other codes. I have embedded the logic of AMReX_TableData.H structures directly within the Noah-MP library using a header file NoahArray.H.

Client C++ applications like ERF will have to manage an object of NoahmpIO_type similar to Fortran applications. NoahmpIO_type contains bounds and pointers to Fortran data casted as multidimensional arrays in C++. The data structures are interdependent, so physics units can directly modify and access data that will be used/modified on Fortran side.

The initialization works as follows

NoahmpIO_type noahmpio;
NoahmpIOVarInit(&noahmpio);
NoamphInitMain(&noahmpio);

Note that noampio is private member of the NOAH class that inherits from NullSurf class. I have added C++ specific documentation to sphinx and the full NoahMP documentation can be found here (https://opensky.ucar.edu/islandora/object/technotes:599)