Collect browser history with existing root access

[besendorf]

Summary

Adds an explicit, opt-in browser-history acquisition module for devices that already expose working root access through su. AndroidQF never attempts to root the device, stop browser processes, or copy evidence through shared storage.

• adds -browser-history yes|no, defaulting to No in the interactive prompt
• collects Chrome, Brave, Microsoft Edge, and Samsung Internet History databases plus present WAL/SHM sidecars
• validates every pull in host-side staging before creating its ZIP entry, retaining encrypted staging for age acquisitions
• writes browser_history/manifest.json with browser, package, profile, device path, archive path, method, and collection status
• records root_unavailable without aborting the wider acquisition when su is absent

This is the acquisition half of mvt-project/mvt#876, with parsing implemented by mvt-project/mvt#877. The locations are deliberately restricted to paths with evidence: the historical MVT Chrome module fixed the Chrome path, while ALEAPP documents the app_chrome/Default/History and app_sbrowser/Default/History patterns with sample-backed Chrome, Brave, Edge, and Samsung Internet coverage. Package-name substitutions without equivalent evidence are not included.

The Go test suite and go vet ./... pass.