feat: support web search

[zhu-xiaowei]

Description

1. Support web search, provider is Tavily, Google, Bing and Baidu.
2. Support create and share Web App
3. Add image gallery
4. Support clear all chat data
5. Improved Chat Input Design for Mobile
6. Support Amazon Nova Sonic 2
7. Optimize code renderer performance

General Checklist

• The code changes have been fully tested
• Security oriented best practices and standards are followed (e.g. using input sanitization, principle of the least privilege, etc.)
• Documentation update for the change if required
• PR title conforms to conventional commit style
• If breaking change, documentation/changelog update with migration instructions

By submitting this pull request, I confirm that my contribution is made under the terms of the MIT-0 license.