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/ntfy.toml

@@ -5,6 +5,24 @@ category = "iot"
 icon = "🔔"
 protocol = "rest-api"
 
+[i18n.zh]
+description = "ntfy 适配器，通过 ntfy 发布-订阅服务发送推送通知"
+
+[i18n.zh-TW]
+description = "ntfy 適配器，透過 ntfy 發布-訂閱服務發送推播通知"
+
+[i18n.ja]
+description = "ntfyアダプター、ntfyパブサブサービスによるプッシュ通知送信"
+
+[i18n.ko]
+description = "ntfy 어댑터, ntfy 발행-구독 서비스를 통한 푸시 알림 전송"
+
+[i18n.de]
+description = "ntfy-Adapter zum Senden von Push-Benachrichtigungen über den ntfy Pub-Sub-Dienst"
+
+[i18n.es]
+description = "Adaptador de ntfy para enviar notificaciones push a través del servicio pub-sub ntfy"
+
 [metadata]
 url = "https://ntfy.sh"
 docs = "https://docs.ntfy.sh"