Add send raw transaction request

Author: sobolev-igor

ethclient/ethclient.go

@@ -588,6 +588,14 @@ func (ec *Client) SendTransaction(ctx context.Context, tx *types.Transaction) er
 	return ec.c.CallContext(ctx, nil, "eth_sendRawTransaction", hexutil.Encode(data))
 }
 
+// SendRawTransaction injects a raw transaction into the pending pool for execution.
+//
+// If the transaction was a contract creation use the TransactionReceipt method to get the
+// contract address after the transaction has been mined.
+func (ec *Client) SendRawTransaction(ctx context.Context, rawTx string) error {
+	return ec.c.CallContext(ctx, nil, "eth_sendRawTransaction", rawTx)
+}
+
 func toBlockNumArg(number *big.Int) string {
 	if number == nil {
 		return "latest"