Create a repository for knowledge doc ingestion tool

[makelinux]

As previously discussed, the CLI and SDG repositories are not suitable for handling ingestion documents in various formats due to limitations in testability and maintainability. Therefore, a dedicated repository should be created for document ingestion, following scalable architecture principles and adhering to best practices for maintainability, testability, and long-term sustainability.

Related issues:
#64
#120
#148
#149

[github-actions]

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