Abstract MQTT from communication and make mqtt optional (#4462)

* Add option for mqtt config

* Setup communication layer

* Have a dispatcher which is responsible for handling and sending messages

* Move mqtt to communication

* Separate ws communications module

* Make ws client conform to communicator

* Cleanup imports

* Migrate to new dispatcher

* Clean up

* Need to set topic prefix

* Remove references to mqtt in dispatcher

* Don't start mqtt until dispatcher is subscribed

* Cleanup

* Shorten package

* Formatting

* Remove unused

* Cleanup

* Rename mqtt to ws on web

* Fix ws mypy

* Fix mypy

* Reformat

* Cleanup if/else chain

* Catch bad set commands

web/src/AppBar.jsx

@@ -9,7 +9,7 @@ import FrigateRestartIcon from './icons/FrigateRestart';
 import Prompt from './components/Prompt';
 import { useDarkMode } from './context';
 import { useCallback, useRef, useState } from 'preact/hooks';
-import { useRestart } from './api/mqtt';
+import { useRestart } from './api/ws';
 
 export default function AppBar() {
   const [showMoreMenu, setShowMoreMenu] = useState(false);