Added Security Folder

[infstate]

Pull Request

Title

Added a security Folder with a basic firewall feature.

Type of Change

• New feature
• Bug fix
• Documentation Update (Due to be added!)
• Refactoring
• Hotfix
• Security patch
• UI/UX improvement

Description

Hello, once again, I added a new feature called Security.
This folder is meant to do any tasks like hardening or managing security of a linux machine.
I have added a template firewall rules feature.
It just runs your recommended firewall rules with UFW. CTT 3 Security Mistakes

Testing

I have tested this on Kubuntu 24.04 with linutil, and it works fine.

Impact

This could make users easily automate security processes.

Issue related to PR

None

Additional Information

Maybe change the rules or added extra options for the user to choose.

Checklist

• My code adheres to the coding and style guidelines of the project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no errors/warnings/merge conflicts.