Removed hypre arg parser.
Starting moving hypre code to class.
Solve and set vector functions.

Also updated the problem print statement.
Correct calling sequence
Renamed hypre vectors.
Moved solver class decls into header.
Cleaned up row assignments.

It is now done based on the problem geometry.
Added constructors args.
Added dx and dy
Moved 2d example function to test
Get values after solve.

Multiply rhs by h2.
Cleaned up test function.
Removed class variables.

These vectors should be defined at the function level.
Added second solve to hypre test case.

I want to make sure that it can be called multiple times.