* added script handler "_onchatmessage" that gets triggered when ANY chat message is recieved.
* TODO: finish & debug "processchatai" and "registerchataiscript" scripts.
* note that this version might still be buggy! please test and give feedback on forum!
* added a temp workaround to prevent the execution of dangerous scripts over return values as ingame commands.
( -out ?{say .shutdown} )