Add a "get" benchmark for a simple flat object, no fetching of nested structures.

We need a trivial data fetching benchmark as a baseline for assessing overhead associated with various frameworks as opposed to pure SQL.

No file, test, or entry point is named in the issue. Start by locating the existing benchmark definitions and their commands, then identify how a simple flat-object fetch is represented alongside the current ORM cases. Done means a runnable baseline benchmark that fetches only a flat object without nested structures and can be compared with the pure-SQL overhead described here.

Written by the indexing model from the issue text.