Add Last.fm integration plugin with YouTube link support

- Added Last.fm plugin for tracking currently playing music with !register and !np commands
- Added YouTube API integration to provide links to currently playing songs
- Updated help.py and README.md with documentation for the new plugin
- Plugin stores user associations in SQLite database
- Added YouTube API key to .env file for YouTube search functionality
- Supports displaying track name in bold text with album information when available
- Added YouTube link to songs when available

plugins/help.py

@@ -358,6 +358,32 @@ Search Exploit-DB for security vulnerabilities and exploits. Returns detailed in
 <em>Note: SSLv2/SSLv3 testing limited by Python security features</em></p>
 </details>
 
+<details><summary>🎵 <strong>Last.fm Integration</strong></summary>
+<p>Register your Last.fm username and display currently playing tracks.</p>
+<p><strong>Commands:</strong></p>
+<ul>
+<li><code>!register <username></code> - Register your Last.fm username</li>
+<li><code>!np</code> - Display your currently playing track from Last.fm</li>
+</ul>
+<p><strong>Features:</strong></p>
+<ul>
+<li>Associate your Matrix ID with your Last.fm username</li>
+<li>Display currently playing tracks with artist and album information</li>
+<li>Uses SQLite database to store user associations</li>
+<li>Requires LASTFM_API_KEY environment variable</li>
+</ul>
+<p><strong>Examples:</strong></p>
+<ul>
+<li><code>!register your_lastfm_username</code> - Register your Last.fm username</li>
+<li><code>!np</code> - Show your currently playing track</li>
+</ul>
+<p><strong>Requirements:</strong></p>
+<ul>
+<li>LASTFM_API_KEY in .env file</li>
+<li>Last.fm account at last.fm</li>
+</ul>
+</details>
+
 
 
 <details><summary>📸 <strong>!sd [prompt]</strong></summary>