Adds support for custom ctor for moves in MoveDataLoader

PkmnLib.Dataloader/Models/SerializedMove.cs

@@ -1,5 +1,7 @@
 using System.Collections.Generic;
+using System.Text.Json;
 using System.Text.Json.Nodes;
+using System.Text.Json.Serialization;
 
 namespace PkmnLib.Dataloader.Models;
 
@@ -20,6 +22,9 @@ public class SerializedMove
     public string Category { get; set; } = null!;
     public string[] Flags { get; set; } = null!;
     public SerializedMoveEffect? Effect { get; set; }
+    
+    [JsonExtensionData]
+    public Dictionary<string, JsonElement>? ExtensionData { get; set; }
 }
 
 public class SerializedMoveEffect

PkmnLib.Dataloader/Models/SerializedSpecies.cs

@@ -38,6 +38,9 @@ public class SerializedForm
     public bool IsMega { get; set; }
     public SerializedMoves Moves { get; set; } = null!;
     public string[] Flags { get; set; } = [];
+    
+    [JsonExtensionData]
+    public Dictionary<string, JsonElement>? ExtensionData { get; set; }
 }
 
 public class SerializedEvolution