Validation work

Toolkit.Foundation/ValidatorCollection.cs

@@ -0,0 +1,24 @@
+using System.Diagnostics.CodeAnalysis;
+using System.Collections;
+
+namespace Toolkit.Foundation;
+
+public class ValidatorCollection :
+    IValidatorCollection
+{
+    private readonly Dictionary<string, Validator> binders = [];
+
+    public int Count => binders.Count;
+
+    public void Add(string key, Validator binder) => 
+        binders.Add(key, binder);
+
+    public IEnumerator<Validator> GetEnumerator() => 
+        binders.Select(x => x.Value).GetEnumerator();
+
+    public bool TryGet(string key, [MaybeNull] out Validator? value) => 
+        binders.TryGetValue(key, out value);
+
+    IEnumerator IEnumerable.GetEnumerator() => 
+        binders.Select(x => x.Value).GetEnumerator();
+}