feat: payment integration (stripe)

[matheins]

Describe the feature you'd like to request

Add a form field wich allows the user to submit payment details. The creator should be able to setup stripe with his own api credentials.

Describe the solution you'd like to see

1. Creator adds connects account
2. Creator adds stripe field to form and defines price
3. User fills out stripe payment element
4. User confirms payment by submitting form

Additional information

• Use stripe connect
• Use stripe payment element

Stripe doc

[matheins]

Feel free to contribute 👏🏻