初步完成邮件功能

DMS.Core/Interfaces/Repositories/IEmailAccountRepository.cs

@@ -0,0 +1,20 @@
+using DMS.Core.Models;
+
+namespace DMS.Core.Interfaces.Repositories
+{
+    /// <summary>
+    /// 邮件账户仓储接口
+    /// </summary>
+    public interface IEmailAccountRepository : IBaseRepository<EmailAccount>
+    {
+        /// <summary>
+        /// 获取默认邮件账户
+        /// </summary>
+        Task<EmailAccount> GetDefaultAccountAsync();
+
+        /// <summary>
+        /// 获取所有启用的邮件账户
+        /// </summary>
+        Task<List<EmailAccount>> GetActiveAccountsAsync();
+    }
+}