create /api-service/stock?q={stock-code}

When a user requests a stock quote (calls the stock endpoint in the api service), if it exists, it should be saved and related to that user in the database.

• The response returned by the API service should be like this:

  GET /stock?q=aapl.us

    {
    "name": "APPLE",
    "symbol": "AAPL.US",
    "open": 123.66,
    "high": 123.66,
    "low": 122.49,
    "close": 123
    }