[oneMKL][spblas] Restrict features not supported by any backends

Update sparse specification to avoid features that are not supported by Intel oneMKL, cuSPARSE or rocSPARSE. This is used in https://github.com/oneapi-src/oneMKL/pull/500

Do not allow to change the sparse handle types as no backend support it currently.
Change the restrictions on matrix view to avoid configurations that are not supported by any backend currently.
Simplify constructor of matrix_view as the diagonal view is not useful currently. This could cause confusion.
Do not allow spmv conjtrans with symmetric or Hermitian matrices

uxlfoundation / oneAPI-spec