zSpawner

Fix loading of default configuration

Update to last zMenu and Sarah version

• Various code optimization and improvement
• Fix database implementation
• Improves inventories

• Added SuperiorSkyBlock tracker support.
• Added team-based spawner management when using SuperiorSkyBlock.
• Fixed virtual spawner placement issues.
• Added an option to give experience directly to the player from virtual spawners.

• Update to Sarah 1.20. Added MARIADB support
• Fix zShop API
• Fix sell button
• Change metadata key to persistant data container
• Add virtual spawner spawn limit
• Add custom drop for virtual spawner