clean: use camel case for class file

frontend/static/js/api/chat/Message.js

@@ -0,0 +1,10 @@
+class Message {
+	constructor(channel_id, author_id, content, time) {
+		this.channel_id = channel_id;
+		this.author_id = author_id;
+		this.content = content;
+		this.time = time;
+	}
+}
+
+export {Message};