startup: Add port map based on game type

Ugly mechanism but whatever. Send different games to different
ports so that we can set up independent Express instances tailored
to each game's weird HTTP quirks.

src/startup.js

@@ -4,6 +4,10 @@ const express = require('express')
 const zlib = require('zlib')
 const os = require('os')
 
+const services = new Map();
+
+services.set("SDBT", 9000); // Chunithm
+
 function decodeRequest(req) {
   const buf = Buffer.from(req, 'base64')
   const bytes = zlib.unzipSync(buf)
@@ -55,7 +59,7 @@ app.post('/sys/servlet/PowerOn', function (req, resp) {
 
   const respParams = {
     stat: 1,
-    uri: `http://${os.hostname()}:9000/`,
+    uri: `http://${os.hostname()}:${services.get(reqParams.game_id)}/`,
     host: '',
     place_id: '123',
     name: 'Name',