feat: add YAML settings management and admin settings page, add default_playlist_users

templates/admin/settings.html

@@ -0,0 +1,20 @@
+{% extends "admin.html" %}
+
+{% block admin_content %}
+<h2>Settings</h2>
+<form action="/admin/settings/save" method="post">
+    <div class="mb-3">
+        <h3>Default Playlist Users</h3>
+        <div id="defaultPlaylistUsers">
+            {% for user in jellyfin_users %}
+            <div class="form-check">
+                <input class="form-check-input" type="checkbox" name="default_playlist_users" value="{{ user.Id }}" id="user-{{ user.Id }}"
+                {% if user.Id in config['runtime_settings']['default_playlist_users'] %}checked{% endif %}>
+                <label class="form-check-label" for="user-{{ user.Id }}">{{ user.Name }}</label>
+            </div>
+            {% endfor %}
+        </div>
+    </div>
+    <button type="submit" class="btn btn-primary">Save Settings</button>
+</form>
+{% endblock %}