Adding support for managed identity connection strings for pgvector vectore store

[asindarov]

Hi,

We have been working on our RAG application and we use pgvector and azure cloud. We wanted to have a very secure environment by enabling entra only authentication for postgresql flexible server on azure therefore need a support for managed identity based connection string to be used upon connecting to the vector store. Is there anything existing we can use otherwise I will be happy to create a PR for that ?

Thanks
Asadbek