Add Font Awesome icons and refactor tech icon handling

- Added Font Awesome dependencies for enhanced icon support.
- Refactored tech icon components to utilize Font Awesome icons instead of custom SVGs.
- Updated skill data files to include icon properties for various technologies.
- Removed obsolete tech icon files to streamline the codebase.

app/layout.tsx

@@ -2,6 +2,7 @@ import type { Metadata } from "next";
 import { GeistSans } from "geist/font/sans";
 import { GeistMono } from "geist/font/mono";
 import "./globals.css";
+import "@/lib/fontawesome"; // Configuration Font Awesome
 import { ThemeProvider } from "@/components/layout/theme-provider";
 import { Toaster } from "@/components/ui/sonner";
 import { UserProvider } from "@/hooks/use-user-context";