Support Parallel Transport for current OCM CLI

[jakobmoellerdev]

Description

Optimize OCM transfer performance by introducing a concurrent worker pool to replace the existing sequential transfer logic.
The new approach parallelizes artifact transfers while maintaining data integrity and controlled concurrency through a bounded worker pool.

Goals

• Improve overall transfer speed by enabling concurrent operations.
• Maintain reliability and resource efficiency during parallel transfers.
• Provide configuration flexibility for tuning concurrency levels based on system capacity.

Done Criteria

• PR merged
• Code reviewed by other team members
• Unit tests created or updated for new concurrency logic
• Integration test suite updated to validate concurrent behavior
• End-user documentation updated (if applicable)
• Internal technical documentation updated to describe worker pool design and configuration
• Successful demonstration in review session