Feature: more user side log

[HairlessVillager]

这个 PR 增加了更多的日志和对应的回调函数，方便应用层展示用户侧的日志。具体来说包括以下 3 个回调函数：

1. logAssistantReasoning：展示大模型思考过程；
2. logToolUsing：展示正在使用的工具的名称；
3. logToolUsingDetail：展示正在使用的工具的运行细节。

参考实现如下：

      logToolUsing: async (toolName) => {
        printLog("Using the tool: " + toolName);
      },
      logAssistantReasoning: async (reasoning) => {
        printLog("Thinking: " + reasoning);
      },
      logToolUsingDetail: async (toolName, detail) => {
        printLog(`Detail of ${toolName}: ${detail}`);
      },

---

This PR adds more logs and corresponding callback functions to facilitate the display of user-side logs at the application layer. Specifically, it includes the following three callback functions:

1. logAssistantReasoning: Displays the thinking process of the large model;
2. logToolUsing: Displays the name of the tool currently in use;
3. logToolUsingDetail: Displays the operational details of the tool currently in use.

The reference implementation is as follows:

logToolUsing: async (toolName: string) => {
  printLog("Using the tool: " + toolName);
},
logAssistantReasoning: async (reasoning: string) => {
  printLog("Thinking: " + reasoning);
},
logToolUsingDetail: async (toolName: string, detail: string) => {
  printLog(`Detail of ${toolName}: ${detail}`);
},

[HairlessVillager]

Close as duplicate development.