Hi this PR adds support for deferring the initialization of a vector store if the user didn't ask for it.

  • updates a handful of VectorStore implementations to honor a new boolean flag, initializeSchema
  • updates documentation for both the root vectorstores.adoc and the relevant docs for each of the modules affected
  • updates VectorStore integration tests, defaulting to true (the old behavior) in those intstances

Comment From: markpollack

I have a local branch with many more changes, so closing this PR