Hook into Vault for economy

[Levi Muniz]

Is your feature request related to a problem? Please describe.
None applicable

Describe the solution you'd like

Hook into Vault to enable the following features:

• Allow charging players for using certain portals
• Maybe apply the fee to the warp itself so people using /mp warp also get charged
• Create a permission node to bypass prices
• Consider allowing rank-based pricing

Describe alternatives you've considered
None applicable

Additional context
https://github.com/MilkBowl/VaultAPI