That's not really how this is supposed to work. No one "launches an open source project" except clueless executives obsessed with OKRs and KPIs or junior developers in desperate need of stuffing their GitHub profile.
People build things to solve problems and, when they figure out others might benefit from their work, decide how to make it available. It's only then that your "project" _may_ also become "an open source project".
People build things to solve problems and, when they figure out others might benefit from their work, decide how to make it available. It's only then that your "project" _may_ also become "an open source project".