migrate to record (#1665)

* migrate to record

* chore: update project files and clean up unused references

* refactor: convert classes to records and simplify constructors for IntOrString, ResourceQuantity, and V1Patch

* fix: define IsExternalInit to resolve CS0518 error in IntOrString

* refactor: change IntOrString and ResourceQuantity from records to structs, update implicit conversions, and simplify null checks

* refactor: add JsonPropertyName attribute to Value property in IntOrString struct

* refactor: simplify V1Patch constructor and improve argument validation

* refactor: remove unnecessary CultureInfo parameter in ToInt method

* Update src/KubernetesClient/Models/ResourceQuantity.cs

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update src/KubernetesClient/Models/IntOrString.cs

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Revert "Update src/KubernetesClient/Models/ResourceQuantity.cs"

This reverts commit 62b20a691554659e28d419067220dc1a0620133b.

* refactor: remove commented-out formatting check and simplify build command

* refactor: remove IValidate.cs from project references in Aot and Classic

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

src/KubernetesClient/Models/KubernetesList.cs

@@ -40,24 +40,5 @@ namespace k8s.Models
         /// </summary>
         [JsonPropertyName("metadata")]
         public V1ListMeta Metadata { get; set; }
-
-        /// <summary>
-        /// Validate the object.
-        /// </summary>
-        public void Validate()
-        {
-            if (Items == null)
-            {
-                throw new ArgumentNullException("Items");
-            }
-
-            if (Items != null)
-            {
-                foreach (var element in Items.OfType<IValidate>())
-                {
-                    element.Validate();
-                }
-            }
-        }
     }
 }