Added events core$cmdraw (and core$cmd to filter empty words from the array).
Updated mod hooktest to verify event `cmd` working.
Added nick prefix support for cmd events and fixed hellohook.
Updated mod raw to use core$cmd hook.
Updated mod test_firetimed to use core$cmd hook.
Updated mod auto to use core$cmd hook.
Updated mod info to use core$cmd hook.
Updated mod core to use core$cmd hook.