feat(engine)!: refactor graphics, ECS, and logging APIs

Major refactor of graphics and ECS infrastructure:
- Removed IResourceManager, IRenderSystem, IFenceSynchronizer interfaces; ResourceManager and RenderSystem are now concrete classes.
- Updated all render graph, pipeline, and context code to use concrete ResourceManager.
- Refactored camera/frustum math and render extraction for clarity and correctness; frustum now uses inline arrays.
- RenderingLayerMask is now an immutable struct with bitwise operators.
- Meshlet and meshlet group data structures improved; meshlet build callback signature updated.
- Logging system overhauled: LogMessage is now a class, LogCollection supports change events, and Logger is used directly in the debug console.
- ECS query API: ChunkView.Count renamed to EntityCount; query builder/iterators use VirtualStack.Scope.
- Updated render pipeline and passes for new resource manager and render list APIs.
- Cleaned up obsolete files, improved code style, and updated documentation.
- HLSL meshlet shader updated for new struct layout.
- Debug console now uses new logger and log collection.

BREAKING CHANGE: Public APIs for resource management, rendering, ECS queries, and logging have changed. Interfaces removed; use new concrete types and updated method signatures.

src/Test/Ghost.Entities.Test/EntityQueryTest.cs

@@ -20,7 +20,7 @@ internal struct TestChunkQueryJob : IJobChunk
         var random = new random((uint)ctx.ThreadIndex + 1u);
 
         var transforms = view.GetComponentDataRW<Transform>();
-        for (var i = 0; i < view.Count; i++)
+        for (var i = 0; i < view.EntityCount; i++)
         {
             transforms[i].position += random.NextFloat3();
         }
@@ -76,8 +76,8 @@ public partial class EntityQueryTest : ITest
                 // var bits = chunk.GetEnableBits<Transform>();
 
                 // var it = bits.GetIterator();
-                // while (it.Next(out var index) && index < chunk.Count)
-                for (var index = 0; index < chunk.Count; index++)
+                // while (it.Next(out var index) && index < chunk.EntityCount)
+                for (var index = 0; index < chunk.EntityCount; index++)
                 {
                     Console.WriteLine($"Entity {chunkEntities[index]} Updated Position: {transforms[index].position}");
                 }