allow asQueryEngine and asRetriever to take options

apps/simple/listIndex.ts

packages/core/src/callbacks/utility/handleOpenAIStream.ts

packages/core/src/indices/BaseIndex.ts

packages/core/src/indices/list/ListIndex.ts

...ages/core/src/indices/vectorStore/VectorIndexRetriever.ts

packages/core/src/indices/vectorStore/VectorStoreIndex.ts

packages/core/src/llm/LLM.ts

packages/core/src/tests/CallbackManager.test.ts