Coinselection implementation

[ikripaka]

• Implement a trait for coin selection, which is automatically derived for relevant types.
• Implement value retrieval for taker funds to handle UTXO storage (while the maker fund saves the info, the taker fund retrieves it).
• Add an option for manually adjusting input UTXOs.

By now cli command for taker fund is simplified to this view:

~/Documents/Work_dl/simplicity-dex-copy git:[feature/coinselection]
cargo run -- taker fund \
  --collateral-amount-deposit 1000 \
  --maker-order-event-id 33b861985a1bfe9b4ed4ec8ef2b4221446292a617f6f162a1c30c8c398e68c3f

In logs you can also see which of utxos were chosen for transaction:

2025-12-05T15:19:26.422276Z  INFO process: Chosen utxos: Utxos {
    filler_token_utxo: OutPoint {
        txid: 22207dc06e14bb20a68b52f2f317e2564bf99caa8e6749bc7589e3e7a199c6d0,
        vout: 5,
    },
    collateral_token_utxo: OutPoint {
        txid: 22207dc06e14bb20a68b52f2f317e2564bf99caa8e6749bc7589e3e7a199c6d0,
        vout: 8,
    },
}
......

[Taker] Tx fund sending result: fd2b8c6382cb058bff845df89ee388d955f8575715d2459de225617f69907a8e, reply event id: 099aa3f8b93eaf906dd992165777fdefffd2b1beb206a074d8f05f93f96ccef9

data for taker fund command is also available to retrieve manually from command:

cargo run -- helpers add-outs-to-sqlite-cache --tx-id 22207dc06e14bb20a68b52f2f317e2564bf99caa8e6749bc7589e3e7a199c6d0