feat(glossary): provide basic term glossary (#869)

* feat(glossary): provide basic term glossary

Enabled a site-wide terminology glossary.

* Added the `term` shortcode displaying term definition.
* Added the /glossary page showing all term definitions.
* Enabled a simplistic search of term definitions.

* refactor(glossary): update glossary page links and add callout for Hugo support

- Removed the glossary entry from the menu and adjusted weights for subsequent items.
- Added informational callouts in the glossary documentation for multiple languages, directing users to the Hugo Glossary Quick Reference.
- Updated links in the glossary documentation to point to the correct pages.

* fix(glossary): update links to glossary page format across multiple languages

- Changed links in the glossary documentation to use Hugo's relref format for consistency.
- Updated links in Persian, Japanese, English, and Simplified Chinese glossary pages.

---------

Co-authored-by: Xin <5097752+imfing@users.noreply.github.com>
Co-authored-by: Xin <xin@imfing.com>

docs/data/zh-cn/termbase.yaml

@@ -0,0 +1,12 @@
+---
+# 术语词汇表
+#
+# term.html shortcode 的使用示例：
+#
+# {{< term "SEO" >}}
+
+- term: seo
+  abbr: SEO
+  definition: "搜索引擎优化——提高网页在搜索引擎中的可见度"
+- term: "静态网站生成器"
+  definition: "将文本输入处理为静态网页的生成引擎"