Docs: Add D3D12 API documentation

docs/api/d3d12/d3d12-command-list-clear-depth-stencil.md

@@ -0,0 +1,16 @@
+# D3D12CommandList::ClearDepthStencil
+
+清除深度模板缓冲区。
+
+```cpp
+void ClearDepthStencil(void* depthStencil, float depth, uint8_t stencil) override;
+```
+
+**参数：**
+- `depthStencil` - 深度模板目标指针
+- `depth` - 深度值
+- `stencil` - 模板值
+
+## 相关文档
+
+- [D3D12CommandList 总览](d3d12-command-list.md)