Add --timeout for run subcommands

[Southclaws]

When running unit tests, the user does not intend to actually host a server. However, the SA:MP server process is a blocking, continual process which means it only exits when it errors internally or is closed externally via a signal.

--timeout for sampctl server run and sampctl package run will solve this with minimal effort.

It would simply set a timer when the process starts and kill the process when the time runs out.

[Southclaws]

Not necessary now due to runtime modes.