feat: integrate ghdj/laravel-visitor-tracker

[GhDj]

Wire the ghdj/laravel-visitor-tracker package (^1.1) into the app to provide first-party visitor analytics for dev-tools.online.

Integration:

• Require ghdj/laravel-visitor-tracker ^1.1 (composer.json/lock).
• Append the package's TrackVisitor middleware to the web group in bootstrap/app.php so all web requests are recorded.
• Add the /tools/visitor-tracker route and sitemap entry, served by a new visitorTracker() action on ToolController plus a public-facing Blade view under resources/views/tools/visitor-tracker.blade.php.
• Rely on the package's loadMigrationsFrom for the visitors/visits schema; published copies are intentionally not committed.

Dashboard auth (env-driven via config/visitor-tracker.php):

• Local: token-based auth so the dashboard is gated by a shared secret.
• Production: allow_unprotected enabled because the dashboard route is fronted by Cloudflare Access, which performs the actual auth.

Operations:

• Add cron/migrate.php as the OVH cron entrypoint that bootstraps Laravel and runs migrate --force, so package migrations apply on shared hosting without shell access.
• .gitignore: ignore database/*.sqlite, .sqlite-journal and bootstrap/cache/.php to keep local artifacts out of the repo.
• deploy.yml: strip database/.sqlite and bootstrap/cache/*.php from the build before SFTP so dev artifacts never reach production.