feat: add extra info to inventory

[gsanchietti]

NethServer/nethsecurity#1512

[Copilot]

Pull request overview

Adds additional “info” fields to the nethsec.inventory module to enrich collected inventory data (per issue #1512).

Changes:

• Added new info_* helpers for hostname/FQDN, kernel version, uptime, default public IPv4/IPv6 detection, and update availability checks.
• Added an anonymization helper for values when subscription status is "no".
• Added basic version parsing to compare current vs latest image versions.

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[Copilot]

@gsanchietti I've opened a new pull request, #114, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@gsanchietti I've opened a new pull request, #115, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@gsanchietti I've opened a new pull request, #116, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@gsanchietti I've opened a new pull request, #117, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 9 comments.

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