Refactor: variant-aware shader/material pipeline overhaul

Major architectural update to graphics/material/shader system:
- Introduced strongly-typed key structs (Key64/Key128) for passes, variants, and pipelines; removed legacy key types.
- Implemented robust hashing and key generation utilities for efficient variant and pipeline lookup/caching.
- Shader compiler now compiles/caches all keyword variants using new key system; includes handled as lists.
- Switched to push constant root signature for per-draw data; updated HLSL and C# codegen accordingly.
- Refactored Material, Shader, and Pass data structures for cache efficiency and variant support.
- Pipeline library and PSO management now use 128-bit keys and variant-specific caching.
- Replaced WorldNode with SceneNode in editor/scene graph; introduced ComponentManager for archetype/query management.
- Migrated math utilities to Misaki.HighPerformance.Mathematics; updated editor controls.
- Updated all HLSL and codegen for new buffer/push constant layouts and macros.
- Misc: project reference cleanup, D3D12 Work Graph support, doc updates, and code modernization.

Ghost.Graphics.Test/Ghost.Graphics.Test.csproj

@@ -15,6 +15,7 @@
   <ItemGroup>
     <None Remove="Controls\DebugConsole.xaml" />
     <None Remove="Windows\DebugOutputWindow.xaml" />
+    <None Remove="Windows\WorkGraphTestWindow.xaml" />
   </ItemGroup>
 
   <ItemGroup>
@@ -56,6 +57,11 @@
     <ProjectReference Include="..\Ghost.Engine\Ghost.Engine.csproj" />
     <ProjectReference Include="..\Ghost.Test.Core\Ghost.Test.Core.csproj" />
   </ItemGroup>
+  <ItemGroup>
+    <Page Update="Windows\WorkGraphTestWindow.xaml">
+      <Generator>MSBuild:Compile</Generator>
+    </Page>
+  </ItemGroup>
 
   <!-- 
     Defining the "HasPackageAndPublishMenuAddedByProject" property here allows the Solution