Stats page for releases.jumoo.co.uk

Repo: Jumoo/releases

Added a stats.html page: total downloads counter, release cadence, per-package download trends, a "legacy debt" gauge (% of downloads on EOL Umbraco majors), and per-package version adoption breakdown, using Chart.js
Added NuGet download-count collection to the fetch script, with a daily history snapshot for trend sparklines
Made stats sections collapsible, all but the summary collapsed by default
Added 3 new Translation Manager connector packages (CSV, SmartCat, Publicis) to the tracked package list