AEWeb - Usage KPI

### Is your feature request related to a problem?

_No response_

### Describe the solution you'd like

I would like to provide a decentralized solution to measure the usage of static sites hosted on AEWeb

Ideally, I would like to obtain the following data:

- The total amount of megabytes used per day/week/month.
- The amount of megabytes used per user session.
- The specific pages or resources that contribute the most to the usage of megabytes.

### Additional context

_No response_

### Epic

_No response_

No files, tests, or entry points are named. Start by mapping the AEWeb static-site serving path and any existing usage or telemetry boundaries; done means the approach can measure daily, weekly, and monthly bytes, per-session bytes, and the pages or resources contributing most to usage.

Written by the indexing model from the issue text.