feat: add i18n descriptions to all hands and channels (#22)

Add [i18n.zh], [i18n.zh-TW], [i18n.ja], [i18n.ko], [i18n.de], [i18n.es]
sections with translated descriptions to:
- 15 Hand TOML files (hands/*/HAND.toml)
- 44 Channel TOML files (channels/*.toml)

This enables the website to display localized Hand and Channel descriptions
based on the user's selected language.

channels/qq.toml

@@ -5,6 +5,24 @@ category = "messaging"
 icon = "🐧"
 protocol = "websocket"
 
+[i18n.zh]
+description = "QQ 机器人适配器，在腾讯 QQ 群组和频道中收发消息"
+
+[i18n.zh-TW]
+description = "QQ 機器人適配器，在騰訊 QQ 群組和頻道中收發訊息"
+
+[i18n.ja]
+description = "QQボットアダプター、Tencent QQグループとチャンネルでのメッセージング"
+
+[i18n.ko]
+description = "QQ 봇 어댑터, Tencent QQ 그룹 및 채널에서 메시지 송수신"
+
+[i18n.de]
+description = "QQ-Bot-Adapter für Nachrichten in Tencent QQ-Gruppen und -Kanälen"
+
+[i18n.es]
+description = "Adaptador de bot QQ para mensajería en grupos y canales de Tencent QQ"
+
 [metadata]
 url = "https://im.qq.com"
 docs = "https://bot.q.qq.com/wiki/"