ALL-2392 Added 'replaceable' way of tx preparation (RBF) for BTC and DOGE

[alexloiko]

No description provided.

[TatumBot]

Task linked: ALL-2392 Implement ability to enable RBF for BTC-based txs

[gitguardian]

⚠️ GitGuardian has uncovered 2 secrets following the scan of your pull request.

Please consider investigating the findings and remediating the incidents. Failure to do so may lead to compromising the associated services or software components.

🔎 Detected hardcoded secrets in your pull request

GitGuardian id	Secret	Commit	Filename
4757440	Generic High Entropy Secret	99a4b36	examples/doge-example/src/app/doge.tx.rbf.example.ts	View secret
4757440	Generic High Entropy Secret	99a4b36	examples/btc-example/src/app/btc.tx.rbf.example.ts	View secret

🛠 Guidelines to remediate hardcoded secrets

1. Understand the implications of revoking this secret by investigating where it is used in your code.
2. Replace and store your secrets safely. Learn here the best practices.
3. Revoke and rotate these secrets.
4. If possible, rewrite git history. Rewriting git history is not a trivial act. You might completely break other contributing developers' workflow and you risk accidentally deleting legitimate data.

To avoid such incidents in the future consider

• following these best practices for managing and storing secrets including API keys and other credentials
• install secret detection on pre-commit to catch secret before it leaves your machine and ease remediation.

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