Add an option to not show "Successfully ran macro" notifications

[YousufSSyed]

I know it may not be obvious if a macro runs successfully, but sometimes it is when the commands in the macro create their own notifications. Perhaps a user should be able to choose one of three settings: one where notifications are off on all macros, one where they're all on, and one where the user can pick per macro whether it sends a notification.

[GiacomoLaw]

+1 to this. I use macros to enable various focus plugins, so pretty obvious when it fires :D