New RPC method eth_sendRawTransactionSync(rawTx, timeoutMs?) that
submits a signed tx and blocks until a receipt is available or a timeout
elapses.
Two CLI flags to tune server-side limits:
--rpc.txsync.defaulttimeout (default wait window)
--rpc.txsync.maxtimeout (upper bound; requests are clamped)
closes https://github.com/ethereum/go-ethereum/issues/32094
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Co-authored-by: aodhgan <gawnieg@gmail.com>
Co-authored-by: Sina Mahmoodi <itz.s1na@gmail.com>
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