Refactor matrix file I/O

[pelesh]

The idea behind this PR is to have matrix import from file utilities in Re::Solve return a ready to use matrix in proper CSR or sorted COO format. That could help simplify some of the code in Re::Solve that was added to support unsorted COO with duplicates to CSR conversions.

What i hope to accomplish is:

• Import proper CSR from Matrix Market file.
• Remove nnz_expanded_ sparse matrix member variable and supporting accessor methods (i.e. resolve document invariants for nnz_expanded_ or remove it entirely #166).
• Fix ReSolve::io::writeMatrixToFile calls Sparse::print, which writes out 0-indexed coordinates of matrix data, when the matrix market coordinate format is 1-indexed #179.
• Resolve Sparse::updateData reads nnz from nnz_expanded_ if the is_expanded_ flag is set #176.

[pelesh]

This PR touches a large number of files but most of the changes are trivial. Significant changes are only in matrix/io.cpp file.

[pelesh]

All tests pass with NVIDIA and AMD GPUs.

CC: @superwhiskers

[maksud]

Functionality wise more concise. Thanks, all test works

[maksud]

The interface looks good to me.