feat(render): refactor pipeline & shader system for DX12 WG

Major refactor of render pipeline and shader system:
- Replaced legacy shader properties with source generator and attribute-based HLSL struct generation.
- Introduced ShaderPropertiesRegistry for runtime property layout/code registration.
- Added modular IRenderPipeline, IRenderPipelineSettings, and IRenderPayload interfaces.
- Implemented GhostRenderPipeline and ECS-driven GPUScene management.
- Added experimental DirectX 12 Work Graph support.
- Refactored shader compilation, variant hashing, and caching.
- Updated APIs for consistency and improved codegen for registration.

These changes modernize the rendering infrastructure for advanced features like work graphs and dynamic pipelines.

BREAKING CHANGE: Shader DSL, pipeline, and property APIs have changed. Existing shaders and pipeline integrations must be updated.

src/Runtime/Ghost.Generator/ComponentRegistrationGenerator.cs

@@ -60,30 +60,32 @@ namespace Ghost.Generator
                 return;
             }
 
-            var name = $"g_component_registration";
-
             var sb = new StringBuilder();
-            sb.Append($@"
-[global::System.ComponentModel.EditorBrowsable(global::System.ComponentModel.EditorBrowsableState.Never)]
-internal static class {name}
-{{
-    [global::System.Runtime.CompilerServices.ModuleInitializer]
-    public static void RegisterIComponentTypes()
-    {{");
 
             foreach (var symbol in components.Distinct(SymbolEqualityComparer.Default))
             {
-                if (symbol is null) continue;
+                if (symbol is null)
+                {
+                    continue;
+                }
 
-                sb.Append($@"
-        global::Ghost.Entities.ComponentRegistry.GetOrRegisterComponentID<{symbol.ToDisplayString(SymbolDisplayFormat.FullyQualifiedFormat)}>();");
+                sb.AppendLine($@"        global::Ghost.Entities.ComponentRegistry.GetOrRegisterComponentID<{symbol.ToDisplayString(SymbolDisplayFormat.FullyQualifiedFormat)}>();");
             }
 
-            sb.Append(@"
-    }
-}");
+            var typeName = $"g_component_registration";
+            var code  = $@"// <auto-generated/>
 
-            context.AddSource($"{name}.gen.cs", SourceText.From(sb.ToString(), Encoding.UTF8));
+[global::System.ComponentModel.EditorBrowsable(global::System.ComponentModel.EditorBrowsableState.Never)]
+internal static partial class {typeName}
+{{
+    [global::System.Runtime.CompilerServices.ModuleInitializer]
+    internal static void RegisterIComponentTypes()
+    {{
+{sb}
+    }}
+}}";
+
+            context.AddSource($"{typeName}.gen.cs", code);
         }
     }
 }