feat: finalize core modules and gateway

src/Modules/TakeoutSaaS.Module.Messaging/Options/RabbitMqOptions.cs

@@ -0,0 +1,55 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace TakeoutSaaS.Module.Messaging.Options;
+
+/// <summary>
+/// RabbitMQ 连接与交换机配置。
+/// </summary>
+public sealed class RabbitMqOptions
+{
+    /// <summary>
+    /// 主机名。
+    /// </summary>
+    [Required]
+    public string Host { get; set; } = "localhost";
+
+    /// <summary>
+    /// 端口。
+    /// </summary>
+    [Range(1, 65535)]
+    public int Port { get; set; } = 5672;
+
+    /// <summary>
+    /// 用户名。
+    /// </summary>
+    [Required]
+    public string Username { get; set; } = "guest";
+
+    /// <summary>
+    /// 密码。
+    /// </summary>
+    [Required]
+    public string Password { get; set; } = "guest";
+
+    /// <summary>
+    /// 虚拟主机。
+    /// </summary>
+    public string VirtualHost { get; set; } = "/";
+
+    /// <summary>
+    /// 默认交换机名称。
+    /// </summary>
+    [Required]
+    public string Exchange { get; set; } = "takeout.events";
+
+    /// <summary>
+    /// 交换机类型，默认 topic。
+    /// </summary>
+    public string ExchangeType { get; set; } = "topic";
+
+    /// <summary>
+    /// 消费预取数量。
+    /// </summary>
+    [Range(1, 1000)]
+    public ushort PrefetchCount { get; set; } = 20;
+}