Implement CiviCRM middleware form with stage-based visibility

- Initialize Next.js project with Tailwind CSS
- Create CiviCRM APIv4 integration layer
- Implement stage-based form visibility (stages 0-5)
- Add field mapping configuration for CRM-to-form linking
- Create API routes for data retrieval and submission
- Record form submissions as CiviCRM activities
- Support dynamic contactId and orgId via URL parameters
- Ensure robust form state management with react-hook-form

Co-authored-by: joelbrock <52835+joelbrock@users.noreply.github.com>

public/vercel.svg

@@ -0,0 +1 @@
+<svg fill="none" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1155 1000"><path d="m577.3 0 577.4 1000H0z" fill="#fff"/></svg>