Silder Captcha Recognition Helper for Cea

No need for the original image, @ceajs/slider-captcha will get the slider target position by processing the slider background image [status: WIP]

Demo

Recognition Trustworthiness

Playwright test result(Tested by simulating the unified login of hqu University):

> npx playwright test

Running 1000 tests using 4 workers
  ...
  858 passed (21m)