Refactor render graph error handling and resource APIs

- RenderGraph.Compile/Execute now return Error for better failure detection; error handling is propagated throughout compiler and executor.
- Renamed ScheduleReleaseResource to ReleaseResource for clarity; updated all usages.
- ResourceManager now calls ReleaseResource directly on Mesh, Material, and Shader types.
- Camera exposes Actual/Virtual size properties and Render returns Error.
- RenderingContext now uses IResourceManager for mesh/resource ops.
- Replaced custom BinaryWriter with BufferWriter in RenderGraphHasher.
- Improved variable naming, interface signatures, and code formatting.
- Added Error extension for IsSuccess/IsFailure.
- Minor FMOD/native interop and test code cleanups.
- No breaking API changes except for new Error return values on some methods.

src/Runtime/Ghost.Engine/Resources/EngineData.cs

@@ -4,5 +4,5 @@ internal class EngineData
 {
     public const string ENGINE_NAME = "Ghost Engine";
 
-    public readonly static Version EngineVersion = new(0, 1, 0);
+    public static readonly Version EngineVersion = new(0, 1, 0);
 }