Expose more of the Transaction type

[thunderbiscuit]

Description

We've recently exposed the Transaction type, and I think a few methods on it would be useful. This is a draft PR with the first 3: weight(), size(), and vsize() Edit: it's now much more. I think there might be other methods we might want to expose as well. Take a look at the docs to see them all.

Other candidates have now been added:

1. is_explicitly_rbf
2. is_lock_time_enabled
3. is_absolute_timelock_satisfied
4. is_coin_base
5. txid

This PR is growing in size but I decided to add all 4 fields on the Transaction type. This is useful because it means we can now add the transaction field on the TransactionDetails type (also added in this PR).

I still have a few questions regarding all the translation between the ffi and bdk/rust types, some of the traits I had to remove (Eq and PartialEq on the TransactionDetails type) as well as the usage of Option<Arc<T>> vs Arc<Option<T>>. Will outline those tomorrow.

Closes #303
Closes #187

Changelog notice

APIs Added
- `Transaction` type now exposes the `.weight()`, `.size()`, `.vsize()`, `is_explicitly_rbf()`, `is_lock_time_enabled()`, `is_coin_base(), `txid()`, `input()`, `output()`, `version()`, and `lock_time()` methods [#307]
- New `TxIn` type exposed [#307]
APIs Changed
- `TransactionDetails` now exposes the optional `transaction` field [#307]
Breaking Changes
- `TxOut` type replaces the `address` field by the `script_pubkey` field [#307]
- The `Wallet.list_transaction()` method now takes the `include_raw: bool` argument [#307]

[#307]: https://github.com/bitcoindevkit/bdk-ffi/pull/307

Checklists

All Submissions:

• I've signed all my commits
• I followed the contribution guidelines
• I ran cargo fmt and cargo clippy before committing

New Features:

• I've added tests for the new feature
• I've added docs for the new feature

[thunderbiscuit]

I added the new methods.

You can test the PR by building bdk-jvm with a custom name and publishing to local maven, and then running the following script:

@file:Repository("file:///~/.m2/repository/")
@file:DependsOn("org.bitcoindevkit:bdk-jvm:0.28.0-PR307")

import org.bitcoindevkit.*

val memoryDatabaseConfig = DatabaseConfig.Memory
val blockchainConfig = BlockchainConfig.Electrum(
    ElectrumConfig(
        "ssl://electrum.blockstream.info:60002",
        null,
        5u,
        null,
        100u,
        true,
    )
)

val descriptor = Descriptor("wpkh(tprv8ZgxMBicQKsPf2qfrEygW6fdYseJDDrVnDv26PH5BHdvSuG6ecCbHqLVof9yZcMoM31z9ur3tTYbSnr1WBqbGX97CbXcmp5H6qeMpyvx35B/84h/1h/0h/0/*)", Network.TESTNET)
val wallet = Wallet(descriptor, null, Network.TESTNET, memoryDatabaseConfig)
val blockchain = Blockchain(blockchainConfig)
    
wallet.sync(blockchain, null)
val balance = wallet.getBalance()
check(balance.total > 0uL) { 
     "Wallet balance is 0, please add funds!"
}

@OptIn(ExperimentalUnsignedTypes::class)
val faucetAddress = "tb1ql7w62elx9ucw4pj5lgw4l028hmuw80sndtntxt"
val (psbt, txDetails) = TxBuilder()
        .addRecipient(Address(faucetAddress).scriptPubkey(), 10000u)
        .feeRate(2.0f)
        .enableRbf()
        .finish(wallet)

val tx = psbt.extractTx()
println("Transaction info is:")
println("Coinbase: ${tx.isCoinBase()}")
println("Explicitly signals RBF: ${tx.isExplicitlyRbf()}")
println("Locktime is enabled: ${tx.isLockTimeEnabled()}")
println("Txid: ${tx.txid()}")
println("Weight: ${tx.weight()}")
println("Size: ${tx.size()}")
println("Virtual size: ${tx.vsize()}")
println("Tx version: ${tx.version()}")
println("Tx locktime: ${tx.lockTime()}")
println("Tx inputs: ${tx.inputs()}")
println("Tx outputs: ${tx.outputs()}")

[thunderbiscuit]

@notmandatory this is now ready for review.

[notmandatory]

ACK cba69e6