feat(btc|service): add option to filter confirmed utxos and validate inputs

[ShookLyngs]

Changes

1. Support the "only_confirmed" param in the BtcAssetsApi.getUtxos() API (refer to btc-assets-api#40 and btc-assets-api#41)
2. Support the "onlyConfirmedUtxos" option in the BTC APIs (sendBtc, sendUtxos, sendRgbppUtxos, and the BTC Builder APIs), and also validate inputs to check if each UTXO is confirmed

Details

Option onlyConfirmedUtxos in BTC APIs

This is a boolean option that tells the API to look for confirmed UTXOs when collecting inputs for construction and fee. If not enough confirmed UTXOs to construct the transaction, the API will throw an INSUFFICIENT_UTXO error.

sendBtc({
  // ...
  onlyConfirmedUtxos: true, // optional, default to false
});

Discussion

• The name of the "onlyConfirmedUtxos" option is inherited from the naming of btc-assets-api (refer to btc-assets-api#40 and btc-assets-api#41), which is different than the feature requested.
• Do you prefer "transactionConfirmed" from the feature request as a better name for the option? Do you think "onlyConfirmedUtxos" is fine for now? Or do you have better naming suggestions? (validateInputs? filterConfirmedUtxos? requireConfirmedInputs? requireConfirmedUtxos? requireConfirmedInputs?)

Related issues

• Resolves #87

[Flouse]

• Do you prefer "transactionConfirmed" from the feature request as a better name for the option? Do you think "onlyConfirmedUtxos" is fine for now? Or do you have better naming suggestions? (validateInputs? filterConfirmedUtxos? requireConfirmedInputs? requireConfirmedUtxos? requireConfirmedInputs?)

onlyConfirmedUtxos is good.