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.Editor.Core/Ghost.Editor.Core.csproj

@@ -9,7 +9,8 @@
     <SupportedOSPlatformVersion>10.0.20348.0</SupportedOSPlatformVersion>
     <Nullable>enable</Nullable>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <LangVersion>preview</LangVersion>
+    <!-- in .net 10, field keyword is not preview anymore, but we are still waiting roslyn team to update their code analyzer packages -->
+    <langversion>preview</langversion>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.Windows.SDK.BuildTools" Version="10.0.26100.7175" />
@@ -41,4 +42,4 @@
       <SubType>Designer</SubType>
     </Page>
   </ItemGroup>
-</Project>
+</Project>