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/community/code_contribution/index.rst

@@ -0,0 +1,29 @@
+.. note:: AI Translation Notice
+
+   This document was automatically translated by `Qwen/Qwen3-8B` model, for reference only.
+
+   - Source document: community/code_contribution/index.rst
+
+   - Translation time: 2025-05-19 01:41:37
+
+   - Translation model: `Qwen/Qwen3-8B`
+
+
+   Please report issues via `Community Channel <https://github.com/DragonOS-Community/DragonOS/issues>`_
+
+====================================
+Contributing to Development
+====================================
+
+   DragonOS community warmly welcomes your participation! While learning technology is important, the following documents will help you understand what DragonOS community needs.
+
+   Reading these documents will help you get involved in development and make your code merge into the mainline more quickly.
+
+.. toctree::
+   :maxdepth: 1
+
+   how-to-contribute <https://community.dragonos.org/contributors/>
+
+   c-coding-style
+   rust-coding-style
+   conventional-commit