chore: Added openai compatible vector io endpoints for chromadb (#2489)

# What does this PR do?
This PR implements the openai compatible endpoints for chromadb

Closes #2462 

## Test Plan
Ran ollama llama stack server and ran the command
`pytest -sv --stack-config=http://localhost:8321
tests/integration/vector_io/test_openai_vector_stores.py
--embedding-model all-MiniLM-L6-v2`
8 failed, 27 passed, 8 skipped, 1 xfailed
The failed ones are regarding files api

---------

Signed-off-by: Francisco Javier Arceo <farceo@redhat.com>
Co-authored-by: sarthakdeshpande <sarthak.deshpande@engati.com>
Co-authored-by: Francisco Javier Arceo <farceo@redhat.com>
Co-authored-by: Francisco Arceo <arceofrancisco@gmail.com>

llama_stack/providers/inline/vector_io/chroma/__init__.py

@@ -16,6 +16,6 @@ async def get_provider_impl(config: ChromaVectorIOConfig, deps: dict[Api, Any]):
         ChromaVectorIOAdapter,
     )
 
-    impl = ChromaVectorIOAdapter(config, deps[Api.inference])
+    impl = ChromaVectorIOAdapter(config, deps[Api.inference], deps.get(Api.files))
     await impl.initialize()
     return impl

llama_stack/providers/inline/vector_io/chroma/config.py

@@ -6,12 +6,25 @@
 
 from typing import Any
 
-from pydantic import BaseModel
+from pydantic import BaseModel, Field
+
+from llama_stack.providers.utils.kvstore.config import KVStoreConfig, SqliteKVStoreConfig
+from llama_stack.schema_utils import json_schema_type
 
 
+@json_schema_type
 class ChromaVectorIOConfig(BaseModel):
     db_path: str
+    kvstore: KVStoreConfig = Field(description="Config for KV store backend")
 
     @classmethod
-    def sample_run_config(cls, db_path: str = "${env.CHROMADB_PATH}", **kwargs: Any) -> dict[str, Any]:
-        return {"db_path": db_path}
+    def sample_run_config(
+        cls, __distro_dir__: str, db_path: str = "${env.CHROMADB_PATH}", **kwargs: Any
+    ) -> dict[str, Any]:
+        return {
+            "db_path": db_path,
+            "kvstore": SqliteKVStoreConfig.sample_run_config(
+                __distro_dir__=__distro_dir__,
+                db_name="chroma_inline_registry.db",
+            ),
+        }