Deprecate and replace the "BSON literal" syntax with something other than an even-odd-toggling operator<<. Currently clang-format has no idea how to break these chains into pairs, and humans have a hard time counting the elements to determine what the resulting structure is.

Example:

            BSON("aggregate" << collName << "cursor" << BSONObj{} << "pipeline"
                             << BSON_ARRAY(BSON("$collStats"
                                                << BSON("storageStats" << BSON(
                                                            "waitForLock" << false << "numericOnly"
                                                                          << true)))))),

This kind of thing becomes a completely different arrangement if it's indented, etc, so it's also a churn generator.

I'm certain we can produce a more fluent builder syntax that clang-format will be able to understand and format as proper hierarchical subexpression groupings.