Customer Portal: Pre-filled requests

Similar to how you can pre-fill message content in emails via mailto ( see https://help.front.com/en/articles/2531#supported_options ), it would be helpful to send users to a pre-filled Customer Portal "New Request" form.

Some use-cases;
* Pre-selecting dropdown items (or even hidden items!) based on the path a user took in my app
* A customer needs to be put in touch with our team to complete a request - pre-fill content about the task them need accomplished
* Pre-filling an error message if something goes wrong in-app, and we want a customer to provide some details about what they were doing when submitting an error report