feat: add MongoDB driver handshake metadata

[alexbevi]

Injects driverInfo: { name: 'sails-mongo', version: '<version>' } into the MongoClient.connect() options inside createManager, so that MongoDB server-side telemetry (Atlas dashboards, db.currentOp(), mongod logs) can identify traffic from Sails/Waterline applications.

The MongoDB handshake document will include:

{
  "driver": {
    "name": "nodejs|sails-mongo",
    "version": "6.3.0|2.1.2"
  }
}

See the MongoDB handshake specification for more information.

[sailsbot]

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[alexbevi]

Note the version can be omitted if this is not desirable.