Rewrite JH::TencentCloud::Captha to JH::Captcha for add geetest captcha...

What does this MR do and why?

This MR should not change any features.
Relates to #1746 (closed) GeeTest(极验) and Tencent Captcha both need to override methods of ReCaptcha.
So I centralized the override code from Namespace JH::TecentCloud::Captcha to ::JH::Captcha, so that we can reuse override methods

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