Refactor AI creation interface and connect it to DB data

**Goal:**
The goal of this issue is to refactor the Ui of AI creation user-flow and to make it functional by making a POST request to our just setup MongoDB data storage. This AI should then, be ready to vote!

**Design specs:**
Figma: https://www.figma.com/design/8DdsgV7x11kT7v24bjdWLi/AI-Delegate?node-id=2-331&m=dev