glsl audio (001) step sequencer / envelopes / basic kick

[bonz](https://sr.ht/~jmaselbas/bonz/) jon.zdiv.net Shoutout to nusan for introducing me to glsl audio. Many many thanks to 0b5vr for showing us the way :). [wavenerd](https://0b5vr.com/wavenerd/) [wavenerd-dubplates](https://github.com/0b5vr/wavenerd-dubplates) Love to everyone at stargaze, cookie collective + all our dear demoscene and livecoding friends for endless inspiration and passion.