feat: bind embedding models to vec stores and use vector store map (#821)

.changeset/dry-queens-dream.md

examples/multimodal/load.ts

examples/multimodal/rag.ts

examples/multimodal/retrieve.ts

examples/multimodal/storage.ts

examples/vectorIndexFromVectorStore.ts

packages/core/package.json

packages/core/src/Node.ts

packages/core/src/Settings.ts

packages/core/src/embeddings/MultiModalEmbedding.ts

packages/core/src/embeddings/utils.ts

packages/core/src/indices/BaseIndex.ts

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

packages/core/src/ingestion/IngestionPipeline.ts

...core/src/ingestion/strategies/UpsertsAndDeleteStrategy.ts

packages/core/src/ingestion/strategies/UpsertsStrategy.ts

packages/core/src/ingestion/strategies/index.ts

packages/core/src/internal/settings/EmbedModel.ts

packages/core/src/storage/StorageContext.ts

packages/core/src/storage/vectorStore/AstraDBVectorStore.ts