Changing the way Vault is handled

[boiscljo]

In https://github.com/Iridium-Development/IridiumSkyblock/blob/master/src/main/java/com/iridium/iridiumskyblock/IridiumSkyblock.java#L136
wrapping the economy in a subclass to avoid ClassNotFoundException on Economy.class would render Vault to a softDepends.
Vault is not used in any way shape or form like a required depends in the plugin and the wrapper could be enough to replace it.

Benefits:

• If vault is not there the plugin would start (Disabling Deposit/Withdraw, wrapper would return 0 as balance)
• Could provide a better warning/error message if Vault is missing

Cons:

• Having a wrapper around calls to the economy