Sending arbitrary IR Blaster commands via menu

Before I start to roll my own (Perl! Oy vey!), is there any third-party plugin that allows to send arbitrary commands via IR Blaster (i.e. via the menu, not the CLI)? IR Blaster itself can send all defined commands, but only recognizes four pre-defined trigger conditions (Power on, Power off, Volume +, Volume -).

Usecase: I'd like to send additional commands to the amplifier via the GUI so that I don't have to go hunting for the remote control when I'd like to switch to the turntable ;-)