adding saving to Datapacks and datasets

SessionZero/Data/Dataset.cs

@@ -0,0 +1,46 @@
+using System.Collections.Generic;
+using System.IO;
+
+namespace SessionZero.Data;
+
+public class Dataset
+{
+    public DatasetMetadata Metadata { get; private set; }
+
+    private Dictionary<string, SzDataObject> _objectLookup = [];
+    private readonly string _path;
+    
+    public Dataset(string name, string id, string dataType, string templateId, string iconPath = "", string description = "")
+    {
+        Metadata = new()
+        {
+            Name = name,
+            Id = id,
+            DatasetType = dataType,
+            Description =  description,
+            ObjectTemplateId =  templateId,
+            Icon =  iconPath
+        };
+        
+        _path = Path.Combine(AppManager.DatapacksDirectory, "datasets", id);
+    }
+
+    public void Save()
+    {
+        if (!Directory.Exists(_path))
+        {
+            Directory.CreateDirectory(_path);
+            Directory.CreateDirectory($"{_path}/objects");
+        }
+
+        if (!File.Exists($"{_path}/dataset.meta"))
+        {
+            File.WriteAllText($"{_path}/dataset.meta", Metadata.ToString());
+        }
+    }
+
+    public void AddObject(SzDataObject obj)
+    {
+        _objectLookup.TryAdd(obj.Id, obj);
+    }
+}