app: convert js to ts

There is two way to importing modules that do not have
default exports. Using named imports or enable
esModuleInterop option in your tsconfig.json file.
We enable esModuleInterop because SocksProxyAgent
doesn't have default exports.

app.ts

@@ -1,10 +1,10 @@
 import * as dotenv from "dotenv";
 dotenv.config()
-const SocksProxyAgent = require('socks-proxy-agent') 
+import { SocksProxyAgent } from "socks-proxy-agent";
 import { start } from "./bot/start";
 import mongoConnect from './db_connect'
 const { resubscribeInvoices } = require('./ln');
-const logger = require('./logger');
+import logger from "./logger";
 const { delay } = require('./util');
 
 (async () => {

tsconfig.json

@@ -1,5 +1,6 @@
 {
   "compilerOptions": {
     "strict": true,
+    "esModuleInterop": true,
   }
 }