Added automatic workout time prediction based on exercises, reps, rest, etc. Added 2 new beginner training programs. #grit

Exported pre-existing firebase users and imported them in Brevo, I plan on retargeting them via email. I have no idea what I'm doing with emails. #grit

Picked up abandoned Grit codebase, updated react-native version (never again), prepared an IOS build for release. #grit