Add Spotify integration with improved token management and user interface

- Implemented Spotify OAuth handling in spotify_client_manager.py to ensure valid access tokens for users.
- Created helper functions in spotify_helper.py for refreshing tokens and retrieving user information.
- Developed manage_spotify.html template for connecting and managing Spotify accounts, displaying connection status and token information.
- Added logging for token management processes to enhance debugging and monitoring.
- Introduced a debug client for Spotify interactions to facilitate easier testing and development.

musicround/templates/users/reset_password.html

@@ -13,14 +13,7 @@
         Please enter your new password below
       </p>
     </div>
-    
-    <div class="mt-8 bg-white py-8 px-6 shadow-md rounded-lg">
-      {% for category, message in get_flashed_messages(with_categories=true) %}
-        <div class="mb-4 p-4 rounded-md {% if category == 'danger' %}bg-red-50 text-red-700{% elif category == 'success' %}bg-green-50 text-green-700{% else %}bg-blue-50 text-blue-700{% endif %}">
-          {{ message }}
-        </div>
-      {% endfor %}
-      
+      <div class="mt-8 bg-white py-8 px-6 shadow-md rounded-lg">
       <form class="space-y-6" action="{{ url_for('users.reset_password', token=token) }}" method="POST">
         <input type="hidden" name="csrf_token" value="{{ csrf_token() }}"/>