Add support for https and wss when using domain names

Detect when using https and automatically connects using wss. Also added support for port 80/443 when using a domain name.

Hello,

I have probably done things wrong and the point of this fork was to have a repository to share these changes with my teammates, but I would appreciate your feedback if you have some time to read this.

jvm/src/main/scala/cs214/webapp/server/web/WebServer.scala

@@ -80,7 +80,7 @@ object WebServer:
     instanceId
 
   private[web] def shutdownApp(instanceId: InstanceId): Unit =
-    // Remove references of this app
+    webSocketServer.shutdownApp(instanceId)
     val appId = apps.remove(instanceId).map(_.instance.appInfo.id)
     clocks.get(instanceId).map(_._2).foreach(_.set(false))
     clocks.remove(instanceId)