[REFACTOR] Some refactoring by separating how the setCoreInstance work.
Will be easier when modify it.
[REFACTOR]Refactor in the init method.
[ADD] Adding a graph for UpdateChannel to have a better idea if the
updateChecker feature is really used and which channel is the most
followed.
[REFACTOR/MOD] Refactor the kit method to be able to maintain it
easilly.
Added Enchantments to kits Fixes #355
Added Durability to kits Fixes #56
[MOD] Adding new Kit template for kits.yml. See #56 See #355