feat: add Azure AI Vector Search (#1485)

examples/package.json

...vector-store/azure/data/paul_graham/paul_graham_essay.txt

examples/vector-store/azure/index.ts

examples/vector-store/azure/package.json

examples/vector-store/azure/tsconfig.json

packages/llamaindex/package.json

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

...x/src/storage/chatStore/AzureCosmosMongovCoreChatStore.ts

...es/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts

...aindex/src/vector-store/azure/AzureAISearchVectorStore.ts

.../src/vector-store/azure/AzureAISearchVectorStoreConfig.ts

...amaindex/src/vector-store/azure/AzureQueryResultSearch.ts

packages/llamaindex/src/vector-store/index.ts

packages/llamaindex/src/vector-store/types.ts

...ndex/tests/vector-stores/AzureAISearchVectorStore.test.ts

pnpm-lock.yaml