message: Add /health HTTP endpoint
diff: @@ -176,6 +176,11 @@ async function run() {
  const roomhandler = discordbot.RoomHandler;
  const eventProcessor = discordbot.MxEventProcessor;
  + // tslint:disable-next-line:no-any
  + appservice.expressAppInstance.get("/health", (_, res: any) => {
  + res.status(201).send("");
  + });
  +
  // tslint:disable-next-line:no-any
  appservice.on("query.room", async (roomAlias: string, createRoom: (opts: any) => Promise<void>) => {
  try {
  