Removes the breaking libosrm API change by adding the old interface to
the new. This does not introduce any new breaks.
The downside of this is that it allows for multiple ways to
return JSON responses.
In cases where we are unable to find a phantom node for an input
coordinate, we return an error indicating which coordinate failed.
This would always refer to the coordinate with index equal to the
number of valid phantom nodes found.
We fix this by instead returning the first index for which a
phantom node could not be found.
We failed to check if we could actually find phantom nodes for all
coordinates in the table plugin, leading to corrupt internal state.
```
curl 'http://localhost:5000/table/v1/car/7.4151,43.7305;7.4222,43.7368?radiuses=0;'
```
```
[assert][140505627227904] /tmp/osrm-backend/include/engine/routing_algorithms/routing_base.hpp:68
in: void osrm::engine::routing_algorithms::insertNodesInHeap(osrm::engine::SearchEngineData<osrm::engine::routing_algorithms::ch::Algorithm>::ManyToManyQueryHeap&, const osrm::engine::PhantomNode&) [with bool DIRECTION = false; osrm::engine::SearchEngineData<osrm::engine::routing_algorithms::ch::Algorithm>::ManyToManyQueryHeap = osrm::util::BinaryHeap<unsigned int, unsigned int, int, osrm::engine::ManyToManyHeapData, osrm::util::UnorderedMapStorage<unsigned int, int> >]: phantom_node.IsValid()
terminate called without an active exception
```
