Added gittignore and deleted unused folders

SzLib/SzParser.cs

@@ -1,6 +1,39 @@
+using System.Text.Json;
+using SzLib.DataObjects;
+
 namespace SzLib;
 
-public class SzParser(ISzFileManager szFileManager)
+public class SzParser
 {
-    public readonly ISzFileManager FileManager = szFileManager;
+    public readonly ISzFileManager FileManager;
+
+    private JsonSerializerOptions _jsonOptions = new()
+    {
+        WriteIndented = true,
+    };
+
+    public SzParser(ISzFileManager szFileManager)
+    {
+        FileManager = szFileManager;
+    }
+    
+    public (string result, SzParseError error) SerializeDatasetToJson(SzDataset dataset)
+    {
+        try
+        {
+            var jsonString = JsonSerializer.Serialize(dataset, _jsonOptions);
+            return (jsonString, SzParseError.None);
+        }
+        catch (JsonException e)
+        {
+            return ("", SzParseError.CouldNotSerialize);
+        }
+    }
+}
+
+public enum SzParseError
+{
+    None,
+    CouldNotSerialize,
+    GenericError,
 }