Update rendering architecture and resource management

Added a new `Ref<T>` struct for reference semantics.
Added the `RenderGraph` system for managing rendering passes.
Added the `RenderTexture` class for encapsulating GPU resources.
Added `GraphicsBuffer` class for effective GPU resource management.
Changed `CommandList` methods from public to internal for visibility control.
Changed `IRenderPass` interface from internal to public for accessibility.
Changed `GetData<T>()` in `ComponentObject.cs` to return `CompRef<T>`.
Changed `GetComponent<T>()` in `EntityManager.cs` to return `CompRef<T>`.
Changed `GetSingleton<T>()` in `World.cs` to use `CompRef<T>`.
Changed `IQueryTypeParameter` to use `CompRef<T>` for consistency.
Changed `QueryItem<T0>` and related structs to use `CompRef<T>`.
Changed `Material` class to support bindless textures.
Changed `Shader` class to support bindless rendering.
Changed `Mesh` class to support bindless vertex and index buffer access.
Updated documentation to reflect the new bindless rendering architecture.

.vscode/tasks.json

@@ -0,0 +1,21 @@
+{
+	"version": "2.0.0",
+	"tasks": [
+		{
+			"label": "Build Ghost.Graphics with RenderGraph",
+			"type": "shell",
+			"command": "dotnet",
+			"args": [
+				"build",
+				"Ghost.Graphics/Ghost.Graphics.csproj",
+				"-c",
+				"Debug"
+			],
+			"group": "build",
+			"problemMatcher": [
+				"$msCompile"
+			],
+			"isBackground": false
+		}
+	]
+}