Add terminal commands for enhanced functionality

- Implemented 'about' command to provide information about the terminal.
- Created 'banner' command to display a welcome message based on terminal width.
- Added 'bluesky' command to fetch and display recent posts from Bluesky.
- Introduced 'clear' command to clear the terminal screen.
- Developed 'color' command to change the terminal's color scheme.
- Added 'contact' command to display contact information.
- Implemented 'date' command to show the current date and time.
- Created 'echo' command to echo back user messages.
- Added 'github' command to simulate opening the GitHub repository.
- Implemented 'help' command to list available commands.
- Developed 'history' command to show command history.
- Added 'privacy' command to display the privacy policy.
- Implemented 'whoami' command to show user information.

website/scripts/commands/echo.js

@@ -0,0 +1,9 @@
+/**
+ * Echo command - Echo back message
+ */
+export default {
+    description: 'Echo back message',
+    execute: (term, writeClickable, VERSION, args) => {
+        return args.join(' ') || '';
+    }
+};