Do not initializa Kokkos Arrays anymore

This should improve performances for small Arrays

src/algebra/BiCGStab.hpp

@@ -9,10 +9,10 @@
 
 struct BiCGStab
 {
-  template <typename VectorType, typename MatrixType>
+  template <typename MatrixType, typename VectorType, typename RHSVectorType>
   BiCGStab(const MatrixType& A,
            VectorType& x,
-           const VectorType& b,
+           const RHSVectorType& b,
            const double epsilon,
            const size_t maximum_iteration,
            const bool verbose)