Add SmithyModelExtensions and KebabCase method

Smithy.CSharpGenerator/Utils/NamingUtils.cs

@@ -3,8 +3,7 @@
 namespace Smithy.CSharpGenerator.Utils
 {
     public static class NamingUtils
-    {
-        public static string PascalCase(string id)
+    {        public static string PascalCase(string id)
         {
             if (string.IsNullOrEmpty(id)) return id;
             var parts = id.Split(new[] { '.', '#', '_' }, System.StringSplitOptions.RemoveEmptyEntries);
@@ -18,5 +17,22 @@ public static string PascalCase(string id)
             }
             return sb.ToString();
         }
+
+        public static string KebabCase(string id)
+        {
+            if (string.IsNullOrEmpty(id)) return id;
+            var sb = new StringBuilder();
+
+            for (int i = 0; i < id.Length; i++)
+            {
+                if (i > 0 && char.IsUpper(id[i]))
+                {
+                    sb.Append('-');
+                }
+                sb.Append(char.ToLower(id[i]));
+            }
+
+            return sb.ToString();
+        }
     }
 }

Smithy.Model/SmithyModelExtensions.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Linq;
+
+namespace Smithy.Model
+{
+    /// <summary>
+    /// Extension methods for SmithyModel to simplify shape access
+    /// </summary>
+    public static class SmithyModelExtensions
+    {
+        /// <summary>
+        /// Get a shape by its ID from the model
+        /// </summary>
+        /// <typeparam name="T">The type of shape to retrieve</typeparam>
+        /// <param name="model">The Smithy model</param>
+        /// <param name="shapeId">The ID of the shape to retrieve</param>
+        /// <returns>The shape with the specified ID, or null if not found</returns>
+        public static T GetShape<T>(this SmithyModel model, string shapeId) where T : Shape
+        {
+            if (model == null || string.IsNullOrEmpty(shapeId))
+                return null;
+
+            return model.Shapes.OfType<T>().FirstOrDefault(s => s.Id == shapeId);
+        }
+
+        /// <summary>
+        /// Get a shape by its ID from the model
+        /// </summary>
+        /// <param name="model">The Smithy model</param>
+        /// <param name="shapeId">The ID of the shape to retrieve</param>
+        /// <returns>The shape with the specified ID, or null if not found</returns>
+        public static Shape GetShape(this SmithyModel model, string shapeId)
+        {
+            if (model == null || string.IsNullOrEmpty(shapeId))
+                return null;
+
+            return model.Shapes.FirstOrDefault(s => s.Id == shapeId);
+        }
+    }
+}