doc: Add ai doc translate tool and add English doc. (#1168)

- add tools/doc_translator.py
- translated docs into English

Signed-off-by: longjin <longjin@DragonOS.org>

docs/locales/en/kernel/libs/unified-init.md

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+:::{note}
+**AI Translation Notice**
+
+This document was automatically translated by `Qwen/Qwen3-8B` model, for reference only.
+
+- Source document: kernel/libs/unified-init.md
+
+- Translation time: 2025-05-19 01:41:09
+
+- Translation model: `Qwen/Qwen3-8B`
+
+Please report issues via [Community Channel](https://github.com/DragonOS-Community/DragonOS/issues)
+
+:::
+
+# unified-init Unified Initialization Library
+
+:::{note}
+Author: Longjin <longjin@DragonOS.org>
+
+December 25, 2023
+:::
+
+## 1. Introduction
+
+This library is located in `kernel/crates/unified-init`.
+It provides unified initialization macros to register functions into a unified initialization list. It facilitates unified initialization.
+
+It is important to note that the array of initializers is no_mangle, so its naming should follow the rules of `模块_初始化器` to prevent naming conflicts that could lead to unexpected errors.
+
+## 2. Usage
+
+```rust
+use system_error::SystemError;
+use unified_init::define_unified_initializer_slice;
+use unified_init_macros::unified_init;
+
+/// 初始化函数都将会被放到这个列表中
+define_unified_initializer_slice!(INITIALIZER_LIST);
+
+#[unified_init(INITIALIZER_LIST)]
+fn init1() -> Result<(), SystemError> {
+   Ok(())
+}
+
+#[unified_init(INITIALIZER_LIST)]
+fn init2() -> Result<(), SystemError> {
+   Ok(())
+}
+
+fn main() {
+    assert_eq!(INITIALIZER_LIST.len(), 2);
+}
+
+```
+
+## 3. Development
+
+When testing, you can write test code in `main.rs`,
+and then run `cargo expand --bin unified-init-expand` in the current directory to see the code after the proc macro has been expanded.
+
+## 4. Maintainer
+
+Longjin <longjin@DragonOS.org>