Refactor pipeline state and render output abstractions

- Replace old pipeline enums/structs with new strongly-typed PipelineState and enums (ZTest, ZWrite, Cull, Blend, ColorWriteMask)
- Redesign pipeline keying: introduce 128-bit GraphicsPipelineKey, MaterialPipelineKey, and PassPipelineKey for robust PSO caching
- Replace IRenderTargetStrategy with IRenderOutput; add SwapChainRenderOutput and TextureRenderOutput
- Update renderer and window code to use new render output abstraction and handle viewport/scissor updates
- Make ShaderPass a readonly struct and Shader a struct; use ID-based pass lookup for efficiency
- Materials now support per-pass pipeline overrides with new keying
- Add defensive checks in D3D12CommandBuffer; update D3D12PipelineLibrary for new keying/state
- Move test shader to test.gsdef and update for new pipeline state syntax
- Remove obsolete files/interfaces and perform general code cleanups
- Update all usages and parsing logic for new pipeline state system

Ghost.Shader.Test/Program.cs

@@ -5,7 +5,7 @@ using System.Numerics;
 //ShaderStructGenerator.GenerateHLSL([typeof(TestStruct), typeof(TestEnum), typeof(TestEnumFlags)], PackingRules.Exact, "C:/Users/Misaki/Downloads/Archive/Test.cs.hlsl");
 
 //return;
-
+#if false
 var source = File.ReadAllText("F:/csharp/GhostEngine/Ghost.Graphics/test.gshader");
 
 var lexer = new Lexer(source);
@@ -33,7 +33,7 @@ var descriptor = SDLCompiler.ResolveShader(model);
 SDLCompiler.GenerateShaderCode(descriptor, "C:/Users/Misaki/Downloads/Archive");
 
 Console.WriteLine("Shader compiled successfully:");
-
+#endif
 
 public struct TestStruct
 {