Add bulk_import_entity_id to Sidekiq job start/done logs

What does this MR do and why?

This MR updates BulkImports::* import workers to add bulk_import_entity_id to sidekiq job start & done logs, so that it's easier for Import team to debug what happens to a specific entity (either a project or a group) migration.

Mentions #429610 (closed)

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Before	After

How to set up and validate locally

1. Start a new Direct Transfer
2. In sidekiq logs, observe worker logs with job_status: start have meta.bulk_import_entity_id: ...
3. extra.bulk_import_entity_id: ... for job_status: done logs

MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.