Add support for setting timeout in the allure:serve option

[aiannucci]

Using allure-maven 2.8, when you execute the allure:serve option, it starts the web server with the results but it will only last 60 seconds up, which seems to be the default timeout.
There is no visible option to change this setting, and the server always goes down after 60 seconds.

[eroshenkoam]

ty for feedback, I will fix it until end of the week