Navmesh hot reloading

[GeckoEidechse]

Suggested by @Mauler125 in https://discord.com/channels/920776187884732556/925135799798874192/1037664012579643412

//-----------------------------------------------------------------------------
// Purpose: hot swaps the NavMesh with the current files on the disk
// (All hulls will be reloaded! If NavMesh for hull no longer exist, it will be empty!!!)
//-----------------------------------------------------------------------------
void Detour_Reload()
{
    // Destroy and free the memory for all NavMesh hulls.
    for (int i = 0; i < MAX_HULLS; i++)
    {
        dtNavMesh* nav = GetNavMeshForHull(i);
        if (nav)
        {
            v_Detour_FreeNavMesh(nav);
            MemAllocSingleton()->Free(nav);
        }
    }

    // Reload NavMesh for current level.
    v_Detour_LevelInit();
}

ConCommand::Create("navmesh_reload", "Reloads the NavMesh for all hulls.", FCVAR_RELEASE, Detour_Reload_f, nullptr);

command hot swaps NavMesh for all hulls while the game is running. If you implement this in Northstar, you no longer need to restart the level to reload the NavMesh