feat(proxy): add proxy commands and integrate with API

Add new proxy.rs module with get_proxies and get_providers_proxies commands.
Update mod.rs and lib.rs to re-export and register proxy commands.
Update API.ts to use invoke for proxy commands.
Minor formatting improvements in module/mihomo.rs.

src-tauri/src/cmd/proxy.rs

@@ -0,0 +1,35 @@
+use super::CmdResult;
+use crate::module::mihomo::MihomoManager;
+use tauri::async_runtime;
+
+#[tauri::command]
+pub async fn get_proxies() -> CmdResult<serde_json::Value> {
+    let proxies = async_runtime::spawn_blocking(|| {
+        let rt = tokio::runtime::Runtime::new().unwrap();
+        let manager = MihomoManager::new();
+        {
+            let mut write_guard = manager.write();
+            rt.block_on(write_guard.refresh_proxies());
+        }
+        let read_guard = manager.read();
+        read_guard.fetch_proxies().clone()
+    })
+    .await.map_err(|e| e.to_string())?;
+    Ok(proxies)
+}
+
+#[tauri::command]
+pub async fn get_providers_proxies() -> CmdResult<serde_json::Value> {
+    let providers_proxies = async_runtime::spawn_blocking(|| {
+        let rt = tokio::runtime::Runtime::new().unwrap();
+        let manager = MihomoManager::new();
+        {
+            let mut write_guard = manager.write();
+            rt.block_on(write_guard.refresh_providers_proxies());
+        }
+        let read_guard = manager.read();
+        read_guard.fetch_providers_proxies().clone()
+    })
+    .await.map_err(|e| e.to_string())?;
+    Ok(providers_proxies)
+}