Squad player count sound alert on Battlemetrics by Dan

- Complies with Pixabay license at https://pixabay.com/service/license-summary/ .
- Not endorsed by or affiliated with Battlemetrics. Permission to use logo granted.
- Requires Fx 128.0 or newer.
- Included 'content-script.js' created with GREAT support from free GPT-3.5 @ https://www.perplexity.ai

How to use:
after installation, open any Battlemetrics Squad-server page, set the pages' Autoplay permission to 'Allow Audio and Video' and set a custom value in the top right corner of the page. The sound will instantly play ONCE for you to test, then again once the condition is met. Then a 30-min cooldown is activated for the alert.