Extend createSearchIndex options to include an await boolean type that polls listSearchIndexes to determine the state of a search index operation. Something like this:

db.movies.createSearchIndex(
"example-index",
{ mappings: { dynamic: true }, await: true },
)

Index creation used to have an option to create indexes in the "foreground" which is essentially the same as the request in this ticket.

As Atlas Vector Search becomes more popular, drivers are likely to see a number of user complaints about the asynchronous nature of operating search indexes. The specifications expect users to poll listSearchIndexes to determine the state of the operation. Given this recommendation, it would be natural for drivers (and the server) to provide users with a convenience await option. It's notable that polling listSearchIndexes can require a large amount of non-obvious code depending on the language.