Added SZ singleton and services

SzCore/DataObjects/SzDataset.cs

@@ -8,5 +8,6 @@ public class SzDataset
 
 	public required string DataObjectType {get; set;}
 	public required string DataObjectTemplateId {get; set;}
+	public Guid? DataObjectTemplateUuid {get; set;}
 	public Dictionary<string, SzDataObject> DataObjects {get; set;} = [];
 }

SzCore/DataObjects/SzTemplateField.cs

@@ -2,8 +2,8 @@ namespace SzCore.DataObjects;
 
 public class SzTemplateField
 {
-    public required string Name {get; set;}
     public required string Id {get; set;}
+    public required SzFieldType FieldType { get; set; }
     public bool IsList {get; set;} = false;
     public string DefaultValue {get; set;} = "";
     public bool IsSpecialType {get; set;} = false;