Add GET api/v1/games/:game_id/players/:id endoint

[Patrick-Duvall]

This endpoint returns a players specific deck and discard info in the format

{
  playerId: 99,
  deck: [{
    name: "Gold",
    category: ["Treasure"],
    cost: 6,
    image: "Gold.jpg",
    spendingPower: 3,
    id: 1515
  },
    {
    name: "Gold",
    category: ["Treasure"],
    cost: 6,
    image: "Gold.jpg",
    spendingPower: 3,
    id: 1515
  },
{
    name: "Gold",
    category: ["Treasure"],
    cost: 6,
    image: "Gold.jpg",
    spendingPower: 3,
    id: 1515
  }],
  discard: [{
    name: "Estate",
    type: ["Victory"],
    cost: 2,
    image: "Estate.jpg",
    victoryPoints: 1,
    id: 6123
  },
{
    name: "Estate",
    type: ["Victory"],
    cost: 2,
    image: "Estate.jpg",
    victoryPoints: 1,
    id: 6123
  }
  ]}
}

Requires #33