Material update

You are now able to use any material for the checks.

Patch notes:

• You can choose the material for the checks.
• Fixed multiple vulnerabilities.
• Improved performance significantly
• Fixed default balance bug.
• Added a /money admin <on/off> command for the admin message.

Thanks for the support. :D

More changes to come as I will follow the road map and add more things onto it as I plan to make this plugin VaultUnlocked certified.

- Dev Patch Notes