added array access functions to Field class

Author: HazelCullom

src/MeshField.hpp

@@ -19,7 +19,21 @@ class Field {
   auto& access(int s, int a) const {
     return slice.access(s,a);
   }
-  
+
+  KOKKOS_INLINE_FUNCTION
+  auto& access(int s, int a, int i) const {
+    return slice.access(s,a,i);
+  }
+
+  KOKKOS_INLINE_FUNCTION
+  auto& access(int s, int a, int i, int j) const {
+    return slice.access(s,a,i,j);
+  }
+
+  KOKKOS_INLINE_FUNCTION
+  auto& access(int s, int a, int i, int j, int k) const {
+    return slice.access(s,a,i,j,k);
+  }
 };
 
 template <class Controller>