HextaUI

feat: add informational message to home page indicating ongoing feature development and improvements

refactor: simplify source icon retrieval in AICitations component by using a constant mapping for improved readability and maintainability

feat: integrate AI model selection and citation components into the home page for enhanced user interaction and information accessibility

style: remove margin from icons in MessageActions component for improved alignment and visual consistency

feat: implement AIUsageQuota component to display usage metrics and upgrade prompts, enhancing user awareness of resource limits