Support using stdin as a input argument (shell pipe)

[yangby-cryptape]

Now, a lot of sub-commands of ckb-cli require exporting data into files before pass them into next sub-commands.

In current, I have to write code like this:

ckb-cli tx init --tx-file "${ckb_tmp_txfile}"

echo "${privkey}" > "${privkey_file}"
ckb-tx sign-inputs --tx-file "${ckb_tmp_txfile}" \
    --privkey-path "${privkey_file}" \
    --add-signatures
rm "${privkey_file}"

cat "${ckb_tmp_txfile}" \
    | jq -r ".transaction.outputs[0].lock.code_hash = \"0x${lock_code_hash}\"" \
    | jq -r ".transaction.outputs[0].lock.hash_type = \"data\"" \
    | jq -r ".transaction.outputs[0].lock.args = \"0x\"" \
    | jq -r ".transaction.outputs[0].type = null" \
    | jq -r ".transaction.outputs_data[0] = \"0x\"" \
    > "${ckb_tmp_txfile}.tmp"
mv "${ckb_tmp_txfile}.tmp" "${ckb_tmp_txfile}"
ckb-cli tx send --tx-file "${ckb_tmp_txfile}" --skip-check
rm "${ckb_tmp_txfile}"

But, if ckb-cli support using stdin as a input argument, all temporary files are unnecessary.

For example, if - means stdin, the above code can be rewrite like this:

ckb-cli tx init --tx-file - \
    | ckb-tx sign-inputs --tx-file - --privkey "${privkey}" --add-signatures \
    | jq -r ".transaction.outputs[0].lock.code_hash = \"0x${lock_code_hash}\"" \
    | jq -r ".transaction.outputs[0].lock.hash_type = \"data\"" \
    | jq -r ".transaction.outputs[0].lock.args = \"0x\"" \
    | jq -r ".transaction.outputs[0].type = null" \
    | jq -r ".transaction.outputs_data[0] = \"0x\"" \
    | ckb-cli tx send --tx-file - --skip-check

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