Return more info about Exchanges

[gcatlin]

Is your feature request related to a problem? Please describe.
The data returned for Exchange Codes is limited to the exchange code and the exchange name. It would be useful to have more information about each exchange.

Describe the solution you'd like
It would be nice to have more details similar to the Polygon API; e.g. Market Identifier Code, asset classes, etc.

Describe alternatives you've considered
Using the Polygon API.

Additional context