Added rudimentary DepthStencilTarget

GlitchyEngine/src/Renderer/DepthStencilTarget.bf

@@ -0,0 +1,29 @@
+using System;
+namespace GlitchyEngine.Renderer
+{
+	// TODO: add all features.
+	public class DepthStencilTarget : RefCounted
+	{
+		protected internal GraphicsContext _context ~ _?.ReleaseRef();
+
+		protected uint32 _width, _height;
+
+		public uint32 Width => _width;
+		public uint32 Height => _height;
+
+		public this(GraphicsContext context, uint32 width, uint32 height)
+		{
+			_context = context..AddRef();
+			_width = width;
+			_height = height;
+
+			PlatformCreate();
+		}
+
+		protected extern void PlatformCreate();
+
+		public extern void Bind();
+
+		public extern void Clear(float depthValue, uint8 stencilValue, DepthStencilClearFlag clearFlags);
+	}
+}