POC for client-side telemetry feature outlined in https://docs.google.com/document/d/1pcBLTEGAoJjLH_f23i5TfxJ5zEiuYKxjojU6cxDh5qE/edit?tab=t.0#heading=h.f2z22ukqsn3f

Goal

Getting a working prototype of client/server for the upcoming MDB 9.0 release that will send over client metadata in fixed cadences to the server and get logged.

Known challenges to address:

1. Payload size must remain within 512 bytes.

1. Client metadata can expand on the client side but must be constrained when transmitted.

1. Server changes should be minimal to avoid costly updates across proxies that sit in front of mongod.

1. Define the initial payload shape and values for the Java client.