Fix Conflict and Add Anvil Combining Rule

[TiaTheFairy]

Fix Conflict With Everything tag not working

Add an option to stop applying over-max-level items/books to left item on anvil.
Currently, although you can't combine two Protection 4 to Protection 5. But you can still apply Protection 5 on right item to left item on anvil.
This patch add a config to disallow players apply over-max-level enchantment on right item to left item.
Should be useful if server owner want players to apply over-max-level enchantments in other plugins. This is config optional.

Update paperweight to 1.7.1 from 1.6.2

[TiaTheFairy]

AnvilSupport.kt Line226 should be :

if(!plugin.configYml.getBool("anvil.allow-apply-over-level-enchantment"))

A ! is missing, please edit it.