[zh-cn]: create the translation of commands API (#21282)

Co-authored-by: A1lo <[email protected]>

files/zh-cn/mozilla/add-ons/webextensions/api/commands/index.md

@@ -0,0 +1,69 @@
+---
+title: commands
+slug: Mozilla/Add-ons/WebExtensions/API/commands
+l10n:
+  sourceCommit: b4fd56711aebae6dcd86ad6c5bf1ce25f52347d4
+---
+
+{{AddonSidebar}}
+
+监听用户执行你已使用 [`commands` manifest.json 键](/zh-CN/docs/Mozilla/Add-ons/WebExtensions/manifest.json/commands)注册的命令。
+
+## 类型
+
+- {{WebExtAPIRef("commands.Command")}}
+  - : 表示命令的对象。此对象包含在 [`commands` manifest.json 键](/zh-CN/docs/Mozilla/Add-ons/WebExtensions/manifest.json/commands)中为命令指定的信息。
+
+## 函数
+
+- {{WebExtAPIRef("commands.getAll")}}
+  - : 获取此扩展程序的所有已注册命令。
+- {{WebExtAPIRef("commands.reset")}}
+  - : 重置给定命令的描述和快捷键为清单（manifest）键中给定的值。
+- {{WebExtAPIRef("commands.update")}}
+  - : 更改给定命令的描述或快捷键。
+
+## 事件
+
+- {{WebExtAPIRef("commands.onChanged")}}
+  - : 当命令的快捷键发生更改时触发。
+- {{WebExtAPIRef("commands.onCommand")}}
+  - : 当使用关联的快捷键执行命令时触发。
+
+{{WebExtExamples("h2")}}
+
+## 浏览器兼容性
+
+{{Compat}}
+
+> **备注：** 此 API 基于 Chromium 的 [`chrome.commands`](https://developer.chrome.com/docs/extensions/reference/commands/) API。
+
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