add VersionedSerialization + source generator

VersionedSerialization.Generator/Models/ObjectSerializationInfo.cs

@@ -0,0 +1,13 @@
+using VersionedSerialization.Generator.Utils;
+
+namespace VersionedSerialization.Generator.Models;
+
+public sealed record ObjectSerializationInfo(
+    string Namespace,
+    string Name,
+    bool HasBaseType,
+    bool IsStruct,
+    bool ShouldGenerateSizeMethod,
+    bool CanGenerateSizeMethod,
+    ImmutableEquatableArray<PropertySerializationInfo> Properties
+);