Hide stats DB directory from files tree

What does this MR do and why?

Hide server stats db from users. Currently we have the stats in a directory called db_stats for servers. Recently a number of people have been inadvertently deleting this because they don't know what it is...so we'll hide it on them to save them from themselves. 😄

Screenshots or screen recordings

How to set up and validate locally

Open files make sure you can't see the stats db

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• Have you checked this doesn't interfere/conflict/duplicate someone elses work?
• Have you fully tested your changes?
• Have you resolved any lint issues?
• Have you assigned a reviewer?
• Have you applied correct labels?