euler integration maybe working

advection/src/EulerAdvectionKernel.cpp

@@ -0,0 +1,11 @@
+
+#include "EulerAdvectionKernel.h"
+
+using namespace std;
+
+EulerAdvectionKernel::EulerAdvectionKernel(std::shared_ptr<UVGrid> grid) { }
+
+std::pair<double, double> EulerAdvectionKernel::advect(int time, double latitude, double longitude) const {
+    auto [u,v] = (*grid)[time, latitude, longitude];
+    return {latitude+u*DT, longitude+v*DT};
+}