Task 60613494489

refactor, key: move `CreateMuSig2{Nonce,PartialSig}` functions to `musig.{h,cpp}` module

2026-01-16 16:56:51 completed 202601-move-musig-funcs-to-module 0bff8ffcc09a740fa99ec46d47faad76b2ff2814

Tags

Windows, msvcrt, test cross-built

202601-move-musig-funcs-to-module