Move request/response models (#1754)

src/Api/Models/Public/Request/CollectionUpdateRequestModel.cs

@@ -0,0 +1,19 @@
+using System.Collections.Generic;
+using Bit.Core.Models.Table;
+
+namespace Bit.Api.Models.Public.Request
+{
+    public class CollectionUpdateRequestModel : CollectionBaseModel
+    {
+        /// <summary>
+        /// The associated groups that this collection is assigned to.
+        /// </summary>
+        public IEnumerable<AssociationWithPermissionsRequestModel> Groups { get; set; }
+
+        public Collection ToCollection(Collection existingCollection)
+        {
+            existingCollection.ExternalId = ExternalId;
+            return existingCollection;
+        }
+    }
+}