clang-tidy: check and fix cppcoreguidelines-use-default-member-init

- Enable cppcoreguidelines-use-default-member-init check in .clang-tidy
- Use default member initializers instead of constructor initialization
  for: Pgr_bdAstar, PgrDirectedChPPGraph, Pgr_contractionGraph,
  Pgr_bidirectional, dijkstra_distance_visitor_no_init, Solution, Pgr_ksp

Fixes #3041

# Conflicts:
#	include/vrp/solution.hpp

Author: Mohit242-bit

include/vrp/solution.hpp

@@ -46,8 +46,7 @@ class Solution {
     friend class Optimize;
     friend class PD_problem;
  protected:
-     double EPSILON{0.0001};
-     std::deque<Vehicle_pickDeliver> fleet;
+      std::deque<Vehicle_pickDeliver> fleet;
 
      /* this solution belongs to this problem*/
      Fleet trucks;