Add ipt-server role with firewall configuration and management

- Created handlers for reloading systemd and restarting firewall services.
- Implemented tasks to ensure the existence of configuration directories and files.
- Deployed host-specific and shared configuration files using templates.
- Added scripts for managing IPv4 and IPv6 firewalls.
- Configured systemd service units for ipt-firewall and ip6t-firewall.
- Enabled and started firewall services on system boot.

.gitignore

@@ -1 +1,15 @@
+# Editor
 *.swp
+*.swo
+*~
+
+# Python
+__pycache__/
+*.py[cod]
+
+# Ansible
+*.retry
+.vault_pass
+
+# OS
+.DS_Store