Add logging field validator CI job
What does this MR do?
Adds a new CI job logging-field-validator to the test stage that validates logging fields using LabKit's field validator tool.
This helps ensure logging field consistency across the codebase by checking that logging fields conform to the standard fields defined in gitlab.com/gitlab-org/labkit/v2/fields.
Related issues
gitlab-org/quality/quality-engineering/team-tasks#4110 (closed)
Changes
- Added
logging-field-validatorjob to.gitlab/ci/test.gitlab-ci.yml - Added
.labkit_logging_todo.ymlplaceholder file