[FD] 0071-Turbine for Duplicate Block Prevention

[0xSol]

SIMD-0071 Turbine for Duplicate Block Prevention

• [ ] Solana protocol version
• [ ] List of feature gate links
• [ ] Priority
• [ ] Validator reviews

FireDancer implementation

• [ ] FD validator version
• [ ] FD PoC
• [ ] FD repo link
• [ ] Target testnet date
• [ ] Target mainnet date

[0xSol]

Close this FD tracking issue for now as simd#71 plans to submit / reopen with a more complete design.