Fixed memory leak when deleting Effect

GlitchyEngine/src/Renderer/BufferVariableCollection.bf

@@ -0,0 +1,55 @@
+using System;
+using System.Collections;
+
+namespace GlitchyEngine.Renderer;
+
+public class BufferVariableCollection : IEnumerable<BufferVariable>
+{
+	protected bool _ownsVariables = true;
+	protected List<BufferVariable> _variables = new .();
+	protected Dictionary<String, BufferVariable> _nameToVariable = new .() ~ delete _;
+
+	public this(bool ownsVariables = true)
+	{
+		_ownsVariables = ownsVariables;
+	}
+
+	public ~this()
+	{
+		if(_ownsVariables)
+			DeleteContainerAndItems!(_variables);
+		else
+			delete _variables;
+	}
+
+	public void Add(BufferVariable ownVariable)
+	{
+		_variables.Add(ownVariable);
+		_nameToVariable.Add(ownVariable.Name, ownVariable);
+	}
+
+	public bool TryAdd(BufferVariable ownVariable)
+	{
+		if(_nameToVariable.TryAdd(ownVariable.Name, ownVariable))
+		{
+			_variables.Add(ownVariable);
+			return true;
+		}
+		else
+		{
+			return false;
+		}
+	}
+
+	public bool TryGetVariable(String name, out BufferVariable variable)
+	{
+		return _nameToVariable.TryGetValue(name, out variable);
+	}
+
+	public BufferVariable this[String name] => _nameToVariable[name];
+
+	public List<BufferVariable>.Enumerator GetEnumerator()
+	{
+		return _variables.GetEnumerator();
+	}
+}