feat: add setScriptTimeout method

[javier-godoy]

Add a new method called setScriptTimeout in order to simplify configuration of the timeout for asynchronous script execution in Selenium (which is used by RPC calls).

-getDriver().manage().timeouts().setScriptTimeout(timeoutMillis, TimeUnit.MILLISECONDS);
+setScriptTimeout(timeoutMillis);

Note that recent versions of Selenium no longer support negative values to disable the timeout. Therefore, I have implemented a workaround by using a large value instead. While the official Selenium documentation mentions support for values up to 2e16-1, I found that setting such a high value was not possible. As an alternative, I have chosen a value of 9e15, which still allows the script to execute for a considerable amount of time (a few millennia).