Add README with base model metadata

Copy config.json from google/gemma-3-27b-it

Upload tokenizer - SAE introspection LoRA - google/gemma-3-27b-it-layers_15-31-46-decoder-True_latentqa_cls_past_lens_gemma-3-27b-it - step 20000

SAE introspection LoRA - google/gemma-3-27b-it-layers_15-31-46-decoder-True_latentqa_cls_past_lens_gemma-3-27b-it - step 20000

initial commit