feat: 补充方法描述

jensen.d.ts

@@ -99,12 +99,13 @@ export type Logger = {
 };
 
 declare class Jensen {
-  constructor(log?: Logger);
+  constructor(log?: Logger, conn?: USBDevice);
   init: () => Promise<boolean>;
   connect: () => Promise<void>;
   onconnect: () => void;
   disconnect: () => void;
   ondisconnect?: () => void;
+  reconnect: () => Promise<boolean>;
   isStopConnectionCheck: boolean;
   isConnected: () => boolean;
   getModel: () => string;

src/utils/jensen.js

@@ -161,6 +161,7 @@ async function Jensen(log, conn) {
       if (device && device.opened) device.close();
       device.open();
       await setup();
+      return true;
     }
     catch(ex)
     {