Re-write app build, created macOS installer package

app/src/fx_cast_bridge.json

@@ -1,7 +0,0 @@
-{
-    "name": "fx_cast_bridge"
-  , "description": ""
-  , "path": ""
-  , "type": "stdio"
-  , "allowed_extensions": [ "fx_cast@matt.tf" ]
-}

app/src/launcher.bat

@@ -1,2 +0,0 @@
-@echo off
-node main.js

app/src/launcher.sh

@@ -1,4 +0,0 @@
-#!/usr/bin/env bash
-BASEDIR=$(dirname $0)
-PATH=/usr/local/bin:$PATH
-AVAHI_COMPAT_NOWARN=1 node $BASEDIR/app.js

app/src/main.js

@@ -1,10 +1,11 @@
-import { Client } from 'castv2'
-import { createBrowser, tcp } from 'mdns-js'
+import { Client } from "castv2"
+import { createBrowser, tcp } from "mdns-js"
 
-import http from 'http'
-import fs from 'fs'
+import http from "http"
+import fs from "fs"
+import path from "path"
 
-import * as transforms from './transforms'
+import * as transforms from "./transforms"
 
 
 const browser = createBrowser(tcp("googlecast"));