Move DataMappingModel and DecompilationResult to own files and into Debug.Data namespace

UIX/Microsoft/Iris/Debug/Data/DataMappingModel.cs

@@ -0,0 +1,15 @@
+namespace Microsoft.Iris.Debug.Data;
+
+public class DataMappingModel
+{
+    public DataMappingModel(string provider, string type, string generatedCode)
+    {
+        Provider = provider;
+        Type = type;
+        GeneratedCode = generatedCode;
+    }
+
+    public string Provider { get; internal set; }
+    public string Type { get; internal set; }
+    public string GeneratedCode { get; internal set; }
+}

UIX/Microsoft/Iris/Debug/Data/DecompilationResult.cs

@@ -0,0 +1,15 @@
+using System.Xml;
+
+namespace Microsoft.Iris.Debug.Data;
+
+public class DecompilationResult
+{
+    internal DecompilationResult(string context, XmlDocument doc)
+    {
+        Context = context;
+        Doc = doc;
+    }
+
+    public string Context { get; private set; }
+    public XmlDocument Doc { get; private set; }
+}