If this is the goal and the main reason for stable coins to exist we don`t need them.

Goodell, G., Al-Nakib, H. D., & Tasca, P. (2020). Digital Currency and the Economic Crisis: Helping States Respond. ArXiv:2006.03023 [Cs, Econ, q-Fin]. http://arxiv.org/abs/2006.03023

Omidyar Network, established in 2004 by eBay founder Pierre Omidyar, is funding a company called eCurrency Mint, eCM, for a technology that will allow central banks to issue digital currency called cryptocomplex cash. They have been working with 30 central banks, and two of them are about to announce deployment.