LFDT-Lockness/cggmp21

AI Summary: This GitHub issue requests the implementation of a Key Refresh protocol for the CGGMP24 library. This new protocol will allow parties to generate new secret shares without altering the underlying secret key, significantly enhancing long-term security against mobile adversaries and providing reactive security against compromised shares. It needs to be distinct from the existing auxiliary information refresh and support both non-threshold (n-out-of-n), following Figure 7 of the CGGMP24 paper, and threshold schemes.