Log client information in HTTP requests

### Problem

The logs for incoming HTTP requests do not emit any information about the client making the request.

### Proposed solution

Determine where client information, e.g., `influxdb-client-python/1.36.1`, is included in incoming requests (headers?) and capture/emit that in the logs.

### Additional context

See [slack thread](https://influxdata.slack.com/archives/C084G9LR2HL/p1745536848493959).

Start by locating where incoming HTTP requests are logged and determine which request header contains client information such as `influxdb-client-python/1.36.1`. Done means the incoming-request logs emit that client information; the issue does not name a file or test to begin with.

Written by the indexing model from the issue text.