Add SwiftChat (#354)

* Add SwiftChat

* feat: update image with

* feat: update favicon

docs/SwiftChat/README.md

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+# [SwiftChat](https://github.com/aws-samples/swift-chat)
+
+SwiftChat is a lightning-fast, cross-platform AI chat application built with React Native. It delivers native performance on Android, iOS, iPad, Android tablets and macOS. Features include real-time streaming chat, rich Markdown support (tables, code blocks, LaTeX), AI image generation, customizable system prompts, and multimodal capabilities. Supports multiple AI providers including DeepSeek, Amazon Bedrock, Ollama and OpenAI. The minimalist UI design and optimized architecture ensure instant launch and responsive interactions across all platforms.
+
+## UI
+
+![UI](./assets/promo.png)
+
+## Integrate with Deepseek API
+
+![Mac Settings](./assets/settings.png)
+
+## Using System Prompt with DeepSeek
+
+<img src="./assets/system-prompt.png" width="50%">
+
+For more information, Please refer to [SwiftChat GitHub](https://github.com/aws-samples/swift-chat)
+
+
+

docs/SwiftChat/README_cn.md

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+# [SwiftChat](https://github.com/aws-samples/swift-chat)
+
+SwiftChat 是一个基于 React Native 构建的闪电般快速的跨平台 AI 聊天应用。它在 Android、iOS、iPad、Android 平板电脑和 macOS 上都能提供原生性能体验。功能包括实时流式聊天、丰富的 Markdown 支持（表格、代码块、LaTeX）、AI 图像生成、可自定义系统提示词，以及多模态能力。支持多个 AI 提供商，包括 DeepSeek、Amazon Bedrock、Ollama 和 OpenAI。极简的 UI 设计和优化的架构确保了在所有平台上都能实现即时启动和流畅的交互体验。
+
+## 界面展示
+
+![UI](./assets/promo.png)
+
+## 集成 Deepseek API
+
+![Mac Settings](./assets/settings.png)
+
+## 使用 DeepSeek 的系统提示词
+<img src="./assets/system-prompt.png" width="50%">
+
+更多信息请访问 [SwiftChat GitHub](https://github.com/aws-samples/swift-chat)
+
+