GODRIVER-1412 Add client metadata support for wrapping libraries

[prestonvasquez]

GODRIVER-1412

Summary

Add options.DriverInfo to allow libraries wrapping the Go Driver to append the client metadata generated by the driver when handshaking the server.

Background & Motivation

From DRIVERS-767:

The data warehouse team is tracking driver usage in Atlas and working on a set of charts for that data. As part of that project we would like to begin tracking projects built at MongoDB or maintained by MongoDB employees that wrap drivers. For example, Mongoid, PyMODM, Doctrine, Mongoose, etc. Note that these are wrapping libraries, not applications, so using the appname field is not appropriate

[mongodb-drivers-pr-bot]

API Change Report

./v2/mongo/options

compatible changes

(*ClientOptionsBuilder).SetDriverInfo: added
ClientOptions.DriverInfo: added
DriverInfo: added

./v2/x/mongo/driver/auth

compatible changes

HandshakeOptions.OuterLibraryName: added
HandshakeOptions.OuterLibraryPlatform: added
HandshakeOptions.OuterLibraryVersion: added

./v2/x/mongo/driver/operation

compatible changes

(*Hello).OuterLibraryName: added
(*Hello).OuterLibraryPlatform: added
(*Hello).OuterLibraryVersion: added

./v2/x/mongo/driver/topology

compatible changes

WithOuterLibraryName: added
WithOuterLibraryPlatform: added
WithOuterLibraryVersion: added