[筆記]發送訊息至Teams頻道(webhook連接器)

•  參考：
• http://edwardkuo.github.io/paper/2016/11/28/Azure/O365API/
• [Microsoft Teams]使用Webhook傳訊息到Teams頻道
• https://learn.microsoft.com/zh-tw/training/modules/msteams-webhooks-connectors/5-exercise-incoming-webhooks
• 作法：
• 建立Webhook連接器。
• 程式呼叫weebhook發送訊息。
• 簡易：
• {"text":"message"}
• {"text":"message","title":"this is title."}
• 進階：
• {"text":"message","title":"this is title."
    "sections": [
      {
        "activityTitle": "Section標題",
        "activitySubtitle": "Section次標題",
        "activityText": "Section內文"
      }]"
   }
• {"text":"message","title":"this is title."
    "sections": [
      {
        "activityTitle": "Section標題",
        "activitySubtitle": "Section次標題",
        "activityText": "Section內文"
      }
    ,{
        "title": "很像表格的title",
        "facts": [
          {
            "name": "欄位名",
            "value": "內文"
          },...
      ]"
   }
• potentialAction ...etc