unified automl files

[david-rfai]

Changes

1. Consolidated automl functionality into a single folder with separate flows for fitting and evaluation
2. Updated import paths across all modules to reflect the new unified structure

Testing

Validated changes across multiple notebook types:

1. Fine-tuning and post-training: All lite notebooks tested successfully end-to-end
2. RAG context engineering: All notebooks verified end-to-end
3. get_runs functionality: Confirmed outputs working correctly across all notebook types

Screenshots:

Fine-tuning and post-training get_runs output:

RAG context engineering get_runs output: