tool: add disk-health tool (SMART + NVMe)

[MickLesk]

✍️ Description

New PVE host tool that reports drive health for all physical disks:

• Installs smartmontools and nvme-cli on demand.
• Enumerates physical disks (skipping loop/zram/dm devices) and prints an overall SMART verdict plus key indicators (temperature, power-on hours, wear, reallocated/pending/offline sectors, CRC errors; NVMe spare, percentage used and media errors), highlighting non-zero error counters.
• Optionally starts a non-destructive short SMART self-test on a selected disk.

PS: Entry in DB will be created after merge, i dont have it in VED, so i dont have a json, i create it manually

🔗 Related Issue

Fixes #

✅ Prerequisites (X in brackets)

• Self-review completed – Code follows project standards.
• Tested thoroughly – Changes work as expected.
• No security risks – No hardcoded secrets, unnecessary privilege escalations, or permission issues.

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🛠️ Type of Change (X in brackets)

• 🐞 Bug fix – Resolves an issue without breaking functionality.
• ✨ New feature – Adds new, non-breaking functionality.
• 💥 Breaking change – Alters existing functionality in a way that may require updates.
• 🆕 New script – A fully functional and tested script or script set.
• 🌍 Website update – Changes to script metadata (PocketBase/website data).
• 🔧 Refactoring / Code Cleanup – Improves readability or maintainability without changing functionality.
• 📝 Documentation update – Changes to README, AppName.md, CONTRIBUTING.md, or other docs.