docs: fix Resources module API docs naming conventions and broken links

- Rename constructor/destructor files to follow template spec:
  - ctor.md → constructor.md, dtor.md → destructor.md (audioclip)
  - texture_constructor.md → constructor.md, texture_destructor.md → destructor.md (texture)
  - material-loader-constructor.md → constructor.md, material-loader-destructor.md → destructor.md

- Create missing constructor/destructor docs:
  - audio-loader: constructor.md, destructor.md
  - texture-loader: constructor.md, destructor.md

- Fix broken links to ResourceManager:
  - shader-loader/index.md
  - material-loader/index.md

- Remove duplicate folders (keep hyphenated versions):
  - Delete shaderloader/ (keep shader-loader/)
  - Delete resourcepackage/ (keep resource-package/)
  - Merge textureimportsettings/ into texture-import-settings/

- Rename audio-loader method files:
  - canload.md → can-load.md
  - getdefaultsettings.md → get-default-settings.md
  - getsupportedextensions.md → get-supported-extensions.md

- Update overview pages with proper method links and constructor/destructor entries

docs/api/resources/audio-loader/constructor.md

@@ -0,0 +1,27 @@
+# AudioLoader::AudioLoader
+
+```cpp
+AudioLoader();
+```
+
+默认构造函数，创建一个 `AudioLoader` 实例。该加载器负责管理音频资源的加载流程。
+
+**参数：** 无
+
+**返回：** 无
+
+**线程安全：** ✅
+
+**示例：**
+
+```cpp
+#include "Resources/AudioLoader.h"
+
+using namespace XCEngine::Resources;
+
+AudioLoader loader;
+```
+
+## 相关文档
+
+- [AudioLoader 总览](index.md) - 返回类总览