Zabbix - more CLI automations

[smarticz]

Currently, Zabbix LXC does not provide a dedicated installation guide for this scenario. According to the manual setup process, after downloading the script, there is a schema.sql file in the folder that must be imported into PostgreSQL. Once this is done, you proceed with running the installer.

It would be beneficial to enhance the CLI tool to allow users to input database credentials and automate the database initialization process, including importing schema.sql. Ideally, the tool could even handle PostgreSQL installation simultaneously.

As it stands, it might be simpler to install Zabbix from alternative sources or set everything up manually from scratch.