add document for filesystemstorage

Author: xiaokangwang

docs/.vuepress/config.ts

@@ -229,6 +229,7 @@ export default defineUserConfig({
                                 '/v5/config/service/backgroundObservatory',
                                 '/v5/config/service/tun',
                                 '/v5/config/service/subscription',
+                                '/v5/config/service/filesystemstorage',
                             ],
                         }
                     ],
@@ -416,6 +417,7 @@ export default defineUserConfig({
                                 '/en_US/v5/config/service/backgroundObservatory',
                                 '/en_US/v5/config/service/tun',
                                 '/en_US/v5/config/service/subscription',
+                                '/en_US/v5/config/service/filesystemstorage',
                             ],
                         }
                     ],

docs/en_US/v5/config/service/filesystemstorage.md

@@ -0,0 +1,16 @@
+# File System Storage
+* Name: `filesystemstorage`
+* Type: Service
+* ID: `service.filesystemstorage`
+
+File system storage is a persistent storage implementation that stores information using plain files. (v5.27.0+)
+
+Please ensure that the provided file system supports long file names.
+
+> `stateStorageRoot`: ["WorkDir"]
+
+The location to store states. Currently, only `WorkDir` is supported. This is the directory from which v2ray is running.
+
+> `instanceName`: string
+
+The name of the current instance. This will become the directory name where the states are stored.

docs/v5/config/service/filesystemstorage.md

@@ -0,0 +1,16 @@
+# 文件系统持久存储
+* 名称: `filesystemstorage`
+* 类型: Service
+* ID: `service.filesystemstorage`
+
+文件系统存储是一种使用普通文件存储数据的持久存储实现。(v5.27.0+)
+
+请确保所使用的文件系统支持长文件名。
+
+> `stateStorageRoot`: ["WorkDir"]
+
+存储位置。目前，仅支持 `WorkDir`。这是 v2ray 运行的目录。
+
+> `instanceName`: 字符串
+
+当前实例的名称。这将成为存储状态的目录名。