docs: Add Component, GameObject, TransformComponent and Scene API documentation

- Add Component class documentation with lifecycle methods
- Add GameObject class documentation with component system
- Add TransformComponent documentation with transform methods
- Add Scene class documentation with GameObject management
- Add SceneManager singleton documentation with scene loading
- Update components.md overview with all component classes
- Update main.md navigation with Scene module

docs/api/components/transform-component/transform-direction.md

@@ -0,0 +1,35 @@
+# TransformDirection
+
+Transform a direction from local space to world space.
+
+## Syntax
+
+```cpp
+Math::Vector3 TransformDirection(const Math::Vector3& direction) const;
+```
+
+## Parameters
+
+- `direction` - The local space direction to transform.
+
+## Returns
+
+Returns the transformed direction in world space.
+
+## Remarks
+
+Transforms a direction from local space to world space. Unlike `TransformPoint`, this does not consider translation. Only rotation and scale are applied.
+
+## See Also
+
+- [InverseTransformDirection](inverse-transform-direction)
+- [TransformPoint](transform-point)
+
+## Examples
+
+```cpp
+void Example(TransformComponent* transform) {
+    Math::Vector3 localDir(1.0f, 0.0f, 0.0f);
+    Math::Vector3 worldDir = transform->TransformDirection(localDir);
+}
+```