[21] Kelp GUI should support centralized exchanges as the primary trading venue

[nikhilsaraf]

Desired Behavior

I want to be able to trade on centralized exchanges using the Kelp GUI

Impact

The desired behavior will allow me to use the Kelp GUI on centralized exchanges rather than having to use the Kelp CLI if I want to trade on CEXs.

Feature Suggestion

We can achieve the desired behavior by updating the config file on the backend API for the GUI since this feature is already supported on the Kelp CLI, we just need to invoke the Kelp CLI correctly

References

In our issue here we are essentially adding a second trading exchange to the GUI

This issue is very similar to the issue around adding a second trading template: https://github.com/stellar/kelp/issues/738

Specification

See the specifications at the end of the above issue (https://github.com/stellar/kelp/issues/738) for more context about the changes needed for adding a second trading-template/exchange