Implement Ingestion Pipeline - WebSocket Stream + Automatic Chunking

[iberi22]

This PR implements the data ingestion pipeline as specified in [REFACTOR-4]. It includes the IngestionService which handles file and stream ingestion, automatic content classification (Text, Image, Binary, etc.), and selects the optimal compression strategy (Photonic, Voxel, or Lz4) before distributing chunks to the DHT. It also addresses potential memory issues when ingesting very large files by using a streaming buffer approach.

Fixes #795

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PR created automatically by Jules for task 1959406993996840024 started by @iberi22

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