This commit introduces several core configurations and structural improvements:
* **User Management:** Creates a new `iklim` administrative user with a securely hashed password, enabled by `python3-passlib`.
* **System Configuration:** Sets the system keyboard layout to Turkish Q (`trq`).
* **Security Hardening:** Refines firewall rules for SSH using a rich rule and ensures `journald` log limits file creation.
* **Ansible Variable Management:** Restructures `group_vars` by consolidating global variables into `group_vars/all/vars.yml` and sensitive data into a dedicated `group_vars/all/vault.yml`.
* **Ansible Compatibility:** Adds `!unsafe` to a `docker info` shell command to prevent future warnings.