gpu → data Relation

File in src/engine/2d/gpu	Includes file in src/engine/2d/data
ExplicitKokkosSurfaceSolver.cpp	BoundaryData.hpp
ExplicitKokkosSurfaceSolver.cpp	MeshData.hpp
ExplicitKokkosSurfaceSolver.cpp	SolverOptions2D.hpp
ExplicitKokkosSurfaceSolver.cpp	SurfaceStateData.hpp