Add ping event if failing to load hCaptcha client #202
Description
What
In the event the hCaptcha client library fails to load, ping hCaptcha to let it know there was an issue and try again.
Why
Provide's an understanding when and why a SDK fails to load the underlying library instead of going unnoticed.
Expect
In the event the hCaptcha library fails to load, it should notify hCaptcha via its error reporting tools. It should then try again, up to a set amount of times (three for now) before it calls error callback with failure to load.