clang-tidy: add cppcoreguidelines-special-member-functions

Author: mayurgalhate

include/vrp/solution.hpp

@@ -61,24 +61,15 @@ class Solution {
       *
       */
      Solution();
+     ~Solution() = default;  // destructor
 
 
+     /* copy operations */
+    Solution(const Solution&) = default;
+    Solution& operator=(const Solution&) = default;
 
-     /* @brief copy constructor */
-     Solution(const Solution &sol) :
-         EPSILON(0.0001),
-         fleet(sol.fleet),
-         trucks(sol.trucks)
-    {};
-
-     /* @brief copy assignment */
-     Solution& operator = (const Solution& sol) {
-         EPSILON = 0.0001,
-         fleet = sol.fleet;
-         trucks = sol.trucks;
-         return *this;
-     };
-
+    Solution(Solution&&) = default;
+    Solution& operator=(Solution&&) = default;
 
      Initials_code get_kind() const;