Add a "stripeAccount" header to allow making direct charges with Stripe Connect

[shingoaoyama1]

Is your feature request related to a problem? Please describe.
I'm creating a multi tenancy application and I want to create a direct charge with Stripe Connect. This requires me to add a "stripeAccount" header to the header when creating the payment intent.

Describe the solution you'd like
I would like an update to the Stripe plugin options to configure the request options similar to paymentIntentCreateParams.

Describe alternatives you've considered
Copy the source code or using patch-package

Additional context
Started looking at implementing it, I can send a pull request for evaluation.