feat: implement BitGo signing in SDK#8624

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alextse-bg wants to merge 3 commits intomasterfrom

Commits on Apr 23, 2026

feat(sdk-core): added OFC BitGo signing on trading accounts object
alextse-bg
committed
feat(sdk-core): added OFC BitGo signing on wallet and coins object
alextse-bg
committed
feat(express): support optional passphrase in handleV2OFCSignPayload
mrdanish26
committed