Kuznix/add kuzpkg

[kuznix-code]

Summary

Adds Kuzpkg package-count detection to the Packages module.

Kuzpkg is a Pacman fork used by Kuznix Linux and uses its own local package database. This change adds Kuzpkg as a separate package manager while following the existing Pacman detection approach.

Related issue

Closes #2519

Changes

• Add KUZPKG to FFPackagesFlags.
• Add Kuzpkg package counting to the Packages detection.
• Detect the Kuzpkg local package database.
• Support DBPath and RootDir from /etc/kuzpkg.conf.
• Add the kuzpkg package count to the Packages module output.
• Add Kuzpkg to the combined package count.
• Keep Kuzpkg separate from Pacman even though Kuzpkg is based on Pacman.
• Place the Kuzpkg flag directly after the KISS flag.

Screenshots

Not applicable. This change does not introduce visual changes.

Checklist

• I have tested my changes locally.

[FabioLolix]

Kuzpkg is a Pacman fork used by Kuznix Linux

Where is Kuznix Linux?

[kuznix-code]

it not happend yet, lets do it anyway, kuzpkg is good for linux from scratch, v0.1.0-alpha.2 released today, tested and working and ever showed the package count