Types needed

[dvanmali]

Is your feature request related to a problem? Please describe.

Could potentially solve the issue related #2207 by providing an api key at runtime or loading from a env file by using the authenticator function. Could documentation also be written for the authenticator function?

Describe the solution you'd like

Noticed that the following new types were provided to the UserProvidedConfig but not StripeConfig:

• authenticator?: RequestAuthenticator;
• stripeContext?: string;