Redesign chat UI and remove location sharing

Modernizes the chat and join pages with new styles, improved layouts, and enhanced user experience using custom CSS and FontAwesome icons. Removes location sharing functionality from both frontend and backend, including related templates and code. Adds connection status indicators, notification system, and keyboard shortcuts for better usability.

src/utils/messages.js

@@ -10,15 +10,6 @@ const generateMessage = (username, text) => {
   };
 };
 
-const generateLocationMessage = (username, url) => {
-  return {
-    username: username,
-    url: url,
-    createdAt: new Date().getTime(),
-  };
-};
-
 module.exports = {
   generateMessage,
-  generateLocationMessage,
 };