post https://api.demo.mondu.ai/api/v1/buyers/hosted_onboarding
Buyer Onboarding using hosted onboarding
This endpoint is used to onboard a new buyer using hosted onboarding. The API would return a hosted page URL.
Redirect the buyer to the hosted page URL to complete the onboarding process. Once the buyer has completed
the onboarding process, they would be redirected back to the merchant's website.