vectorstore.fromDocuments needs a timeout and retry for TPM

[diberry]

Checked

• I searched existing ideas and did not find a similar one
• I added a very descriptive title
• I've clearly described the feature request and motivation for it

Feature request

If I upload docs into AI Search with .fromDocuments(), I hit a TPM limit eventually. I can add my own code which basically sends 1 document at a time and pauses/waits for a period of time. However, this could be configured. Both on the interface for all vector searches have it and then concretely on the AI Search implementation.

Motivation

I have to write or provide my own wait logic but for cloud resources, these seems like a standard need.

Proposal (If applicable)

Add it to the fourth param, the AddDocumentsOption