552f11cb5f66a9366dbc05c801fcae043ebe5b82 feat(esplora): include previous `TxOut`s for fee calculation The previous `TxOut` for transactions received from an external wallet are added as floating `TxOut`s to `TxGraph` to allow for fee calculation. (Wei Chen)
Pull request description:
### Description
Partially implements #1265.
The previous `TxOut` for transactions received from an external wallet are added as floating `TxOut`s to `TxGraph` to allow for fee calculation.
### Notes to the reviewers
Currently only the `esplora` portion of #1265 has been implemented.
The `electrum` portion will potentially be done in a new PR, as discussed on the 1/30/24 Lib call.
### Checklists
#### To Do:
* [ ] Implement `electrum` portion of #1265.
#### All Submissions:
* [x] I've signed all my commits
* [x] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
* [x] I ran `cargo fmt` and `cargo clippy` before committing
#### New Features:
* [x] I've added tests for the new feature
* [x] I've added docs for the new feature
ACKs for top commit:
evanlinjin:
re-ACK 552f11cb5f66a9366dbc05c801fcae043ebe5b82
danielabrozzoni:
ACK 552f11cb5f66a9366dbc05c801fcae043ebe5b82
Tree-SHA512: 752a24ebd0b9ad7952c1b093ecb251473e346c77b860c1a80c73418130189227405a0f0d7652967cf8c7b89994e8c37df96cd52b52b6daff9cc8c88b5194069a
7aca88474a