feat(backend-api): #238 getTxOutput(tx,index) in UtxoServicr, UtxoSup…

[satran004]

Change for #238

• New apis to get tx output by txHash and outputIndex, get utxos by asset

UtxoService

Result<Utxo> getTxOutput(String txHash, int outputIndex)
Result<List<Utxo>> getUtxos(String address, String unit, int count, int page, OrderEnum order) 

UtxoSupplier

 Optional<Utxo> getTxOutput(String txHash, int outputIndex);

TransactionService

Result<Utxo> getTransactionOutput(String txnHash, int outputIndex)

• Added implementations for above apis in all backend providers (Blockfrost, Koios, Kupo)
• Integration tests

Known Issue

• For now Koios getTransactionOutput() integration tests with datum hash / inline dataum are commented as Koios backend doesn't return datum or reference script hash in output. Please check the issue here TransactionsService.getTransactionUTxOs doesn't return dataHash or inlineDatum values cardano-community/koios-java-client#120

[sonatype-lift]

NULL_DEREFERENCE: object returned by response.errorBody() could be null and is dereferenced at line 89.

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[sonatype-lift]

MissingSummary: A summary fragment is required; consider using the value of the @return block as a summary fragment instead.

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Suggested change

	@Builder
	Returns {@code this}.

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[sonatype-lift]

🛠 Lift Auto-fix

Some of the Lift findings in this PR can be automatically fixed. You can download and apply these changes in your local project directory of your branch to review the suggestions before committing.¹

# Download the patch
curl https://lift.sonatype.com/api/patch/github.com/bloxbean/cardano-client-lib/241.diff -o lift-autofixes.diff

# Apply the patch with git
git apply lift-autofixes.diff

# Review the changes
git diff

Want it all in a single command? Open a terminal in your project's directory and copy and paste the following command:

curl https://lift.sonatype.com/api/patch/github.com/bloxbean/cardano-client-lib/241.diff | git apply

Once you're satisfied, commit and push your changes in your project.

Footnotes

1. You can preview the patch by opening the patch URL in the browser. ↩

[satran004]

Koios issue (empty datahash, scripthash in output) is still there.
But merging it for now as it's blocking few other changes.