curl_setopt missing error/exception documentation

[CasEbb]

The pages for curl_setopt and curl_setopt_array are missing error/exception information and a changelog. Prior to PHP 8, curl_setopt used to throw warnings for invalid cURL options. Since PHP 8, the functions now raise ValueErrors (php/php-src#5963).

[Girgias]

Related to #163

[philip]

Is this in reference to this general PHP 8 change? https://php.watch/versions/8.0/internal-function-exceptions

[Girgias]

Correct :)