feat(aria2): 重构 download 函数并添加新功能

- 重构 download 函数，返回通知接收器以支持进度更新
- 新增 search 模块，实现关键词搜索功能
- 更新 single模块，增加音频格式判断- 引入日志模块，优化调试输出
- 新增特殊字符替换函数，用于文件名处理

src/search.rs

@@ -0,0 +1,43 @@
+use crate::utils::create_reqwest_client;
+use crate::ErrorString;
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct Search {
+    pub result: SearchResult,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct SearchResult {
+    pub songs: Vec<SearchResultSong>,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct SearchResultSong {
+    pub id: i64,
+    pub name: String,
+    pub artists: Vec<SearchResultSongArtist>,
+    pub duration: u64,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct SearchResultSongArtist {
+    pub name: String,
+}
+
+pub async fn search(keyword: String) -> Result<Vec<SearchResultSong>, ErrorString> {
+    let client = create_reqwest_client().await?;
+
+    let resp = client
+        .get(format!(
+            "https://163.genshinmc.eu.org/search?keywords={}&limit=20",
+            urlencoding::encode(keyword.as_str())
+        ))
+        .send()
+        .await
+        .map_err(|e| format!("请求错误: {}", e))?;
+
+    let json: Search = resp.json().await.map_err(|e| format!("解析错误: {}", e))?;
+
+    Ok(json.result.songs)
+}