Collection of SecretNote Improvement (until 0829)

[z0gSh1u]

• [FEAT] 支持跨 Cell LSP 能力
• [FEAT] 基于轮询实时监控节点的 CPU/MEM
• [FEAT] 添加 About 信息
• [FEAT] Notebook 文件管理 Drive 抽离，不再复用 ServerConnection 配置
• [FEAT] 上传文件提供进度提示
• [FEAT] 添加节点提供进度条
• [FEAT] TopToolbar 优化
• [BUGFIX] 添加节点时校验节点名符合 K8s 规则
• [BUGFIX] 点击“重启 Kernel 并清空输出” 时输出未清空
• [BUGFIX] stream 消息输出到错误的 Cell 或被丢弃
• [DOCS] Welcome 页文档优化，并支持 Markdown 格式
• [DOCS] 补充注释
• [CHORE] 依赖更新至 libro-jupyter@0.2.24; mana-app@0.1.23
• [CHORE] 调整构建

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