Add Stripe Integration

[GreyActOwl1]

Description:

• Integrate Stripe to enable payment processing for any premium features or subscriptions.
• Set up the necessary backend functions in Appwrite to handle Stripe's webhooks and payment events.
• Ensure that the payment workflow is secure and user-friendly, with clear UI/UX design for handling transactions.
• Use Doppler to manage Stripe API keys securely. Acceptance Criteria:
• Users can successfully complete payments for premium features.
• Payment events are recorded in the database and trigger the appropriate backend actions.

[M-Umar-Amir]

I tried to integrate Stripe using Appwrite but it was not working properly. Stripe is also not supported in Pakistan.