fix: set running to true before throwing exit hook on no input

this fixes an issue with the prompt being kind of a mess when
enter alone is pressed (and hilbish doesn't try to run anything)

main.go

@@ -187,6 +187,7 @@ input:
 
 		input = strings.TrimSpace(input)
 		if len(input) == 0 {
+			running = true
 			hooks.Em.Emit("command.exit", 0)
 			continue
 		}