Feat: TrustGraph i18n & Documentation Translation Updates (#781)

Native CLI i18n: The TrustGraph CLI has built-in translation support
that dynamically loads language strings. You can test and use
different languages by simply passing the --lang flag (e.g., --lang
es for Spanish, --lang ru for Russian) or by configuring your
environment's LANG variable.

Automated Docs Translations: This PR introduces autonomously
translated Markdown documentation into several target languages,
including Spanish, Swahili, Portuguese, Turkish, Hindi, Hebrew,
Arabic, Simplified Chinese, and Russian.

docs/contributor-licence-agreement.zh-cn.md

@@ -0,0 +1,16 @@
+---
+layout: default
+title: "贡献者许可协议 (CLA)"
+parent: "Chinese (Beta)"
+---
+
+# 贡献者许可协议 (CLA)
+
+> **Beta Translation:** This document was translated via Machine Learning and as such may not be 100% accurate. All non-English languages are currently classified as Beta.
+
+我们要求所有贡献者在合并拉取请求之前签署贡献者许可协议。该协议**不**会转移版权——您仍然拥有您的作品的全部所有权。它仅授予 TrustGraph 项目一项永久、免版税的使用许可，以在项目的 [Apache 2.0 许可](https://www.apache.org/licenses/LICENSE-2.0) 下分发您的贡献，并确认您有权进行贡献。这既保护了项目本身，也保护了其用户，确保每个贡献都有明确的法律依据。
+
+当您提交拉取请求时，CLA 机器人会发布一条评论，要求您审查并签署相应的协议——这只需要几秒钟，您只需要在所有 TrustGraph 仓库中执行一次。
+
+- 作为**个人**贡献？请签署 [个人 CLA](https://github.com/trustgraph-ai/contributor-license-agreement/blob/main/Fiduciary-Contributor-License-Agreement.md)
+- 代表**公司或组织**贡献？请签署 [实体 CLA](https://github.com/trustgraph-ai/contributor-license-agreement/blob/main/Entity-Fiduciary-Contributor-License-Agreement.md)