feat: Implement face clustering management service and API

Models/DataBase/FaceCluster.cs

@@ -0,0 +1,25 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace Foxel.Models.DataBase;
+
+public class FaceCluster : BaseModel
+{
+    [StringLength(255)]
+    public string Name { get; set; } = string.Empty;
+    
+    [StringLength(1024)]
+    public string? Description { get; set; }
+    
+    /// <summary>
+    /// 用户设置的人物名称
+    /// </summary>
+    [StringLength(255)]
+    public string? PersonName { get; set; }
+    
+    /// <summary>
+    /// 最后更新时间
+    /// </summary>
+    public DateTime LastUpdatedAt { get; set; }
+    
+    public ICollection<Face>? Faces { get; set; }
+}