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

Move SecretsManager files to directories called SecretsManager and add CodeOwners

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

@@ -0,0 +1,35 @@
+using System.ComponentModel.DataAnnotations;
+using Bit.Core.SecretsManager.Entities;
+using Bit.Core.Utilities;
+
+namespace Bit.Api.SecretsManager.Models.Request;
+
+public class SecretCreateRequestModel
+{
+    [Required]
+    [EncryptedString]
+    public string Key { get; set; }
+
+    [Required]
+    [EncryptedString]
+    public string Value { get; set; }
+
+    [Required]
+    [EncryptedString]
+    public string Note { get; set; }
+
+    public Guid[] ProjectIds { get; set; }
+
+    public Secret ToSecret(Guid organizationId)
+    {
+        return new Secret()
+        {
+            OrganizationId = organizationId,
+            Key = Key,
+            Value = Value,
+            Note = Note,
+            DeletedDate = null,
+            Projects = ProjectIds != null && ProjectIds.Any() ? ProjectIds.Select(x => new Project() { Id = x }).ToList() : null,
+        };
+    }
+}