Max travel time not accounted for with vehicle steps.

[jcoupey]

While looking up #946 I came across another problem when using input steps in solving mode. Take for example this simplified version of our example_1 file:

{
  "vehicles": [
    {
      "id": 1,
      "start": [
        2.35044,
        48.71764
      ],
      "end": [
        2.35044,
        48.71764
      ],
      "steps": [
        {
          "type": "job",
          "id": 1
        }
      ],
      "max_travel_time": 1
    }
  ],
  "jobs": [
    {
      "id": 1,
      "location": [
        1.98935,
        48.701
      ]
    }
  ]
}

The max_travel_time parameter is not accounted for when trying to set the initial solution with the vehicle.steps array. In a release mode, this produces a solution breaking the max travel time constraint. In debug mode, this crashes upon formatting the solution:

vroom: ./utils/helpers.h:540: vroom::Solution vroom::utils::format_solution(const vroom::Input&, const RawSolution&): Assertion `v.ok_for_travel_time(eval_sum.duration)' failed.
Aborted (core dumped)