feat(api): add file_processor API skeleton

This change adds a file_processor API skeleton that provides a foundationfor converting files into structured content for vector store ingestionwith support for chunking strategies and optional embedding generation.

Signed-off-by: Alina Ryan <aliryan@redhat.com>

src/llama_stack/distributions/starter-gpu/run-with-postgres-store.yaml

@@ -5,6 +5,7 @@ apis:
 - batches
 - datasetio
 - eval
+- file_processor
 - files
 - inference
 - post_training
@@ -154,6 +155,9 @@ providers:
       metadata_store:
         table_name: files_metadata
         backend: sql_default
+  file_processor:
+  - provider_id: reference
+    provider_type: inline::reference
   safety:
   - provider_id: llama-guard
     provider_type: inline::llama-guard