@turnkey/http: TurnkeyClient should return an error when config.baseUrl is empty

[r-n-o]

We should validate that config.baseUrl is not empty before constructing a client. Otherwise other downstream errors will happen: we can't fetch a relative path.

Here's the line in question:

sdk/packages/http/src/__generated__/services/coordinator/public/v1/public_api.client.ts

Line 149 in 4069b54

this.config = config;

[andrewkmin]

addressed via #127