[SM-460] Isolate SecretsManager files (#2616)

Move SecretsManager files to directories called SecretsManager and add CodeOwners

src/Api/SecretsManager/Models/Request/ProjectCreateRequestModel.cs

@@ -0,0 +1,21 @@
+using System.ComponentModel.DataAnnotations;
+using Bit.Core.SecretsManager.Entities;
+using Bit.Core.Utilities;
+
+namespace Bit.Api.SecretsManager.Models.Request;
+
+public class ProjectCreateRequestModel
+{
+    [Required]
+    [EncryptedString]
+    public string Name { get; set; }
+
+    public Project ToProject(Guid organizationId)
+    {
+        return new Project()
+        {
+            OrganizationId = organizationId,
+            Name = Name,
+        };
+    }
+}