feat: error handling, better prelude, double linked lists usage etc

include/prelude/linkedlist.hpp

@@ -26,6 +26,17 @@ public:
         return list;
     }
 
+public:
+    View<T> ToView()
+    {
+        Builder<T> b;
+        for(ListNode<T>* cur = Begin(); cur != nullptr; cur = cur->next)
+        {
+            b.Push(cur->value);
+        }
+        return b.view();
+    }
+
 public:
     void Append(ListNode<T>* node)
     {