Rework metadata struct loading to use new struct versioning

VersionedSerialization/Attributes/AlignedAttribute.cs

@@ -1,6 +0,0 @@
-namespace VersionedSerialization.Attributes;
-
-#pragma warning disable CS9113 // Parameter is unread.
-[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field)]
-public class AlignedAttribute(int alignment) : Attribute;
-#pragma warning restore CS9113 // Parameter is unread.

VersionedSerialization/Attributes/NativeIntegerAttribute.cs

@@ -0,0 +1,3 @@
+namespace VersionedSerialization.Attributes;
+
+public class NativeIntegerAttribute : Attribute;

VersionedSerialization/IReader.cs

@@ -18,5 +18,6 @@ public interface IReader
     T ReadVersionedObject<T>(in StructVersion version = default) where T : IReadable, new();
     ImmutableArray<T> ReadVersionedObjectArray<T>(long count, in StructVersion version = default) where T : IReadable, new();
 
-    public void Align(int alignment = 0);
+    void Align(int alignment = 0);
+    void Skip(int count);
 }

VersionedSerialization/SpanReader.cs

@@ -143,4 +143,9 @@ public ref struct SpanReader(ReadOnlySpan<byte> data, int offset = 0, bool littl
         if (rem != 0)
             Offset += alignment - rem;
     }
+
+    public void Skip(int count)
+    {
+        Offset += count;
+    }
 }