clean: use camel case for class file

frontend/static/js/api/chat/Channel.js

@@ -1,4 +1,4 @@
-import {Message} from "./message.js";
+import {Message} from "./Message.js";
 
 class Channel {
 	constructor(client, channel_id, members_id, messages, reload) {

frontend/static/js/api/chat/Channels.js

@@ -1,4 +1,4 @@
-import {Channel} from "./channel.js";
+import {Channel} from "./Channel.js";
 
 class Channels {
 	constructor(client) {