Cardano Updates

- Updated the `construct_transaction` method in the RosettaClient to include a `fixed_fee` parameter, allowing transactions to bypass standard fee calculations.
- Added a new test case for fixed fee transactions, validating the handling of a predetermined fee of 4,000,000 lovelaces.
- Revised the README.md to include updated instructions for running tests and added a new test scenario for fixed fee transactions.

- Deleted the pyproject.toml file as it was no longer needed for project configuration.
- Updated pytest.ini to clarify primary configuration settings and adjusted execution options.
- Revised README.md to reflect changes in installation instructions and removed references to Poetry.
- Cleaned up requirements.txt by removing assertpy dependency.
- Enhanced logging format in conftest.py for better HTTP request/response visibility.

- Added a new Python script for conducting stability tests on Cardano
Rosetta API endpoints, measuring response times and validating against
SLA thresholds.
- Introduced a CSV file for test data input and detailed logging of test
results.
- Created comprehensive documentation in README.md outlining test setup,
requirements, and output formats.
- Generated markdown reports for detailed and summary results of the
tests.

* refactor: common executor services defined once and re-used. (#337)

Co-authored-by: Mateusz Czeladka <[email protected]>

* refactor: dependencies update. (#338)

Co-authored-by: Mateusz Czeladka <[email protected]>

* fix: we apply application specific index via flyweel for both single docker image and docker compose. (#341)

Co-authored-by: Mateusz Czeladka <[email protected]>

* refactor: do not use cpu bound thread pool, context switching between threads is not cheap. (#339)

Co-authored-by: Mateusz Czeladka <[email protected]>

* feat: add explicit db properties. (#350)

Co-authored-by: Mateusz Czeladka <[email protected]>

* chore: adjusted 1.2.5 version number

* fix: always use API prefix.

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Co-authored-by: Mateusz Czeladka <[email protected]>

- Added a new Python script for conducting stability tests on Cardano Rosetta API endpoints, measuring response times and validating against SLA thresholds.
- Introduced a CSV file for test data input and detailed logging of test results.
- Created comprehensive documentation in README.md outlining test setup, requirements, and output formats.
- Generated markdown reports for detailed and summary results of the tests.