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/userland/appdev/c-cpp-quick-start.md

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+:::{note}
+**AI Translation Notice**
+
+This document was automatically translated by `Qwen/Qwen3-8B` model, for reference only.
+
+- Source document: userland/appdev/c-cpp-quick-start.md
+
+- Translation time: 2025-05-19 01:41:49
+
+- Translation model: `Qwen/Qwen3-8B`
+
+Please report issues via [Community Channel](https://github.com/DragonOS-Community/DragonOS/issues)
+
+:::
+
+# Developing C/C++ Applications for DragonOS
+
+## Compilation Environment
+
+  DragonOS has partial binary compatibility with Linux, so you can use the musl-gcc compiler from Linux. However, since DragonOS does not currently support dynamic linking, you need to add the compilation parameter `-static`.
+
+For example, you can use the following command:
+```shell
+musl-gcc -static -o hello hello.c
+```
+to compile a hello.c file.
+
+When porting existing programs, you may need to configure `CFLAGS`, `LDFLAGS`, and `CPPFLAGS` to ensure correct compilation. Please refer to the actual requirements.
+
+## Configuring DADK
+
+Please refer to: [Quick Start | DADK](https://docs.dragonos.org.cn/p/dadk/user-manual/quickstart.html)

docs/locales/en/userland/appdev/index.rst

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+.. note:: AI Translation Notice
+
+   This document was automatically translated by `Qwen/Qwen3-8B` model, for reference only.
+
+   - Source document: userland/appdev/index.rst
+
+   - Translation time: 2025-05-19 02:13:34
+
+   - Translation model: `Qwen/Qwen3-8B`
+
+
+   Please report issues via `Community Channel <https://github.com/DragonOS-Community/DragonOS/issues>`_
+
+Application Development Documentation
+===================================================
+
+.. toctree::
+   :maxdepth: 1
+   :caption: Contents
+
+   rust-quick-start
+   c-cpp-quick-start
+   Quick Start to Package an Application to DragonOS Using DADK <https://docs.dragonos.org.cn/p/dadk/user-manual/quickstart.html>
+   DADK Complete Documentation <https://docs.dragonos.org.cn/p/dadk/>

docs/locales/en/userland/appdev/rust-quick-start.md

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+:::{note}
+**AI Translation Notice**
+
+This document was automatically translated by `Qwen/Qwen3-8B` model, for reference only.
+
+- Source document: userland/appdev/rust-quick-start.md
+
+- Translation time: 2025-05-19 01:41:52
+
+- Translation model: `Qwen/Qwen3-8B`
+
+Please report issues via [Community Channel](https://github.com/DragonOS-Community/DragonOS/issues)
+
+:::
+
+# Quick Start Guide for Rust Application Development
+
+## Compilation Environment
+
+  DragonOS has partial binary compatibility with Linux, so you can use the Rust compiler for Linux to compile.
+
+## Project Configuration
+
+### Creating from a Template
+
+:::{note}
+This feature requires dadk version 0.2.0 or higher. For older versions, please refer to the historical DragonOS documentation.
+:::
+
+1. Use the `bootstrap.sh` script in the tools directory of DragonOS to initialize the environment.
+2. Enter `cargo install cargo-generate` in the terminal.
+3. Enter the following command in the terminal:
+
+```shell
+cargo generate --git https://github.com/DragonOS-Community/Rust-App-Template
+```
+To create the project. If your network is slow, please use a mirror site.
+```shell
+cargo generate --git https://git.mirrors.dragonos.org/DragonOS-Community/Rust-App-Template
+```
+
+4. Use `cargo run` to run the project.
+5. In the `user/dadk/config` directory of DragonOS, refer to the template [userapp_config.toml](https://github.com/DragonOS-Community/DADK/blob/main/dadk-config/templates/config/userapp_config.toml) to create a compilation configuration, and install it to the `/` directory of DragonOS.
+(When using the compilation command options of dadk, please use the `make install` configuration in the Makefile for compilation and installation)
+6. Compile DragonOS to install.
+
+### Manual Configuration
+
+If you need to port other libraries or programs to DragonOS, please refer to the configuration in the template.
+
+Since DragonOS currently does not support dynamic linking, you need to specify `-C target-feature=+crt-static -C link-arg=-no-pie` in RUSTFLAGS.