Fix psalm UndefinedClass errors
Fix psalm UndefinedClass errors

Messages:
    ERROR: UndefinedClass - src/Curl/Curl.php:217:64 - Class, interface or enum named CurlHandle does not exist (see https://psalm.dev/019)
            if (is_resource($this->curl) || $this->curl instanceof \CurlHandle) {

    ERROR: UndefinedClass - src/Curl/Curl.php:1570:64 - Class, interface or enum named CurlHandle does not exist (see https://psalm.dev/019)
            if (is_resource($this->curl) || $this->curl instanceof \CurlHandle) {

    ERROR: UndefinedClass - src/Curl/MultiCurl.php:396:74 - Class, interface or enum named CurlMultiHandle does not exist (see https://psalm.dev/019)
            if (is_resource($this->multiCurl) || $this->multiCurl instanceof \CurlMultiHandle) {

php-curl-class/php-curl-class,zachborboa/php-curl-class,php-curl-class/php-curl-class,zachborboa/php-curl-class,php-curl-class/php-curl-class,zachborboa/php-curl-class