I want solana.Transaction to provide a stateful signing and signature verification API.

I want solana.Transaction to provide a stateful signing and signature verification API.: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). For a transaction with three required signers A, B, and C and an empty Signatures slice, calling PartialSign with only B's key…