feat(index.html): add tracking script of microsoft clarity service

[uier]

使用該服務前應該做的事情

• [x] 發個系統公告 update: done, https://noj.tw/announcements/645240ec9aef3b10cc6ff4c5

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[Bogay]

幫那段 code 補個 reference 可能更好，不然長得很像被 uglify 過。