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/teams.toml

@@ -5,6 +5,24 @@ category = "enterprise"
 icon = "🟦"
 protocol = "webhook"
 
+[i18n.zh]
+description = "Microsoft Teams 适配器，在 Teams 频道中收发消息和通知"
+
+[i18n.zh-TW]
+description = "Microsoft Teams 適配器，在 Teams 頻道中收發訊息和通知"
+
+[i18n.ja]
+description = "Microsoft Teamsアダプター、Teamsチャンネルでのメッセージングと通知"
+
+[i18n.ko]
+description = "Microsoft Teams 어댑터, Teams 채널에서 메시지 및 알림 송수신"
+
+[i18n.de]
+description = "Microsoft Teams-Adapter für Nachrichten und Benachrichtigungen in Teams-Kanälen"
+
+[i18n.es]
+description = "Adaptador de Microsoft Teams para mensajería y notificaciones en canales de Teams"
+
 [metadata]
 url = "https://www.microsoft.com/en-us/microsoft-teams"
 docs = "https://learn.microsoft.com/en-us/microsoftteams/platform/"