add nativeapis

Signed-off-by: Nzengyawen <zengyawen1@huawei.com>

en/application-dev/reference/native-apis/raw__file__manager_8h.md

+# raw_file_manager.h
+
+
+## Overview
+
+Provides functions for managing rawfile resources.
+
+You can use the resource manager to open a rawfile and perform operations such as data search and reading.
+
+**Since:**
+8
+
+**Related Modules:**
+
+[Rawfile](rawfile.md)
+
+
+## Summary
+
+
+### Types
+
+| Name | Description | 
+| -------- | -------- |
+| [NativeResourceManager](rawfile.md#nativeresourcemanager) | Implements the resource manager.  | 
+
+
+### Functions
+
+| Name | Description | 
+| -------- | -------- |
+| [OH_ResourceManager_InitNativeResourceManager](#oh_resourcemanager_initnativeresourcemanager) (napi_env env, napi_value jsResMgr) | Obtains the native resource manager based on JavaScipt resource manager.  | 
+| [OH_ResourceManager_ReleaseNativeResourceManager](#oh_resourcemanager_releasenativeresourcemanager) ([NativeResourceManager](#nativeresourcemanager) \*resMgr) | Releases a native resource manager.  | 
+| [OH_ResourceManager_OpenRawDir](#oh_resourcemanager_openrawdir) (const [NativeResourceManager](#nativeresourcemanager) \*mgr, const char \*dirName) | Opens a rawfile directory.  | 
+| [OH_ResourceManager_OpenRawFile](#oh_resourcemanager_openrawfile) (const [NativeResourceManager](#nativeresourcemanager) \*mgr, const char \*fileName) | Opens a rawfile.  | 
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