fix: fix handling of pytest.xfail and skipif mark

[gibiw]

Resolved the following issues:
1. Custom statuses did not work when using pytest.xfail within the test body. #321
2. The test status was displayed incorrectly when using the skipif mark. #320

This pull request includes several changes to the qase-pytest plugin, focusing on version updates, bug fixes, and improvements to the handling of test statuses and logging.

Version Update:

• qase-pytest/pyproject.toml: Updated the version from 6.1.10 to 6.1.11.

Bug Fixes:

• qase-pytest/changelog.md: Documented fixes for issues with pytest.xfail and the skipif mark, where custom statuses did not work within the test body and the status was incorrect, respectively.

Improvements to Test Status Handling:

• qase-pytest/src/qase/pytest/plugin.py: Refactored the pytest_runtest_makereport method to improve the handling of xfail statuses and ensure correct status assignment for skipped and failed tests. This includes the addition of a helper method handle_xfail_status to determine the correct status based on the xfail mark.
• qase-pytest/src/qase/pytest/plugin.py: Modified the __is_use_xfail_mark method to check for the wasxfail attribute instead of the xfail keyword in the report.

Logging Enhancements:

• qase-pytest/src/qase/pytest/plugin.py: Improved log attachment handling by consolidating the logic into a new attach_logs method and ensuring logs are attached only when the test call phase is complete.