It’s a big week for local goths and rivetheads of a certain age, as post-punk/alt-rock legends The Cure and German industrial band KMFDM are both scheduled to perform in the Valley this week. If you’re not in the mood to mope it up or stomp around in 18-eye Doc Martens, other live music options from Monday, May 15, to Thursday, May 18, include rap star $NOT, hyperpop act 100 Gecs, and synth-loving costumed theme bands TWRP and Magic Sword…