refactor: rewrite Youdao service with Swift

[tisfeng]

Fix #762 (comment)

Fix #769 , #775

Now we get Youdao secretKey by dynamic API.

[gitguardian]

️✅ There are no secrets present in this pull request anymore.

If these secrets were true positive and are still valid, we highly recommend you to revoke them.
While these secrets were previously flagged, we no longer have a reference to the
specific commits where they were detected. Once a secret has been leaked into a git
repository, you should consider it compromised, even if it was deleted immediately.
Find here more information about risks.

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[tisfeng]

Please review it quickly, this issue has caused thousands of crashes over the past few days, we need to solve it urgently.

[Jerry23011]

Crashes are fixed on my end compared to 2.10.2

LGTM.