move all models into core

src/Core/Models/Api/Request/FolderRequestModel.cs

@@ -0,0 +1,32 @@
+using System;
+using System.ComponentModel.DataAnnotations;
+using Bit.Core.Utilities;
+using Bit.Core.Models.Table;
+using Newtonsoft.Json;
+
+namespace Bit.Core.Models.Api
+{
+    public class FolderRequestModel
+    {
+        [Required]
+        [EncryptedString]
+        [StringLength(300)]
+        public string Name { get; set; }
+
+        public Cipher ToCipher(Guid userId)
+        {
+            return ToCipher(new Cipher
+            {
+                UserId = userId
+            });
+        }
+
+        public Cipher ToCipher(Cipher existingFolder)
+        {
+            existingFolder.Data = JsonConvert.SerializeObject(new FolderDataModel(this), new JsonSerializerSettings { NullValueHandling = NullValueHandling.Ignore });
+            existingFolder.Type = Core.Enums.CipherType.Folder;
+
+            return existingFolder;
+        }
+    }
+}