Refactor GPU resource management and rendering pipeline

- Introduced `Handle<T>` and `Identifier<T>` for lightweight, strongly-typed resource identifiers.
- Replaced `BitSet` with `UnsafeBitSet` for improved performance and memory safety.
- Refactored `Mesh` and `Material` into `MeshClass` and `MaterialClass` for better GPU resource handling.
- Added `D3D12ResourceDatabase` to centralize GPU resource tracking and lifecycle management.
- Updated `D3D12ShaderCompiler` to load shaders from disk and dynamically populate constant buffers and textures.
- Enhanced `ICommandBuffer` with new upload operations for buffers and textures.
- Refactored `Vertex` struct for simplified memory layout and better performance.
- Updated `MeshBuilder` and rendering logic to align with new resource and shader structures.
- Added `BindlessDescriptor` support to `TextureHandle` and `BufferHandle`.
- Removed unused classes and performed general cleanup.
- Updated unit tests and demos to reflect the new architecture.

Ghost.Graphics/RHI/IPipelineStateController.cs

@@ -1,3 +1,4 @@
+using Ghost.Core;
 using Ghost.Graphics.Data;
 
 namespace Ghost.Graphics.RHI;
@@ -15,11 +16,9 @@ public interface IShaderPipeline
 
 public interface IPipelineStateController
 {
-    public void ColectionShader(ReadOnlySpan<Shader> shaders);
-
-    public void CompileCollected();
+    public void CompileShader(Identifier<Shader> id, string shaderPath);
 
     public void PreCookPipelineState();
 
-    public IShaderPipeline GetShaderPipeline(Shader shader);
+    public IShaderPipeline GetShaderPipeline(Identifier<Shader> id);
 }