XP 存储 (XP Storage)

* Deprecate XP Book II and XP Book III in favor of the main XP Book
* You can't craft them or use them anymore
* No data is lost though, you can convert them to XP Book in the crafting table
* They will be entirely removed in a future update, this version brings a transition phase
* A tooltip is shown when needed to let player know the book should be updated
* The XP Book I becomes a XP Book but can also need an update if it has too much xp stored in it
(again, no xp should be lost in the process)
* XP Book I is renamed XP Book as it will be the only item remaining
* XP Book texture is changed, the "level indicator" is removed as there is only one item
* Book data (capacity, xp from use, xp from brewing and bar color) uses item data component
* Book data also includes the book level, which represents the number of upgrades it got.
This is the replacement for XP Book I, XP Book II, XP Book III
* XP Book recipe is changed and removes the precious ingredient (diamond), as it has less
default capacity than before
* XP Book Upgrade Smithing Template can be crafted to upgrade the book data
* There are three possible upgrades included in the mod, corresponding to previous
XP Book I, XP Book II, XP Book III data
* Upgrades recipes can be updated by players in datapack in order to update book data of upgrades. If books
are upgraded before updating the recipes, the upgraded books will keep their old custom data
* New recipes can be added for more XP Book upgrades
* The smithing ingredient, template, and every new book data can be configured in it
* The XP Book Upgrade Smithing Template can be duplicated with a less expensive recipe
* XP Book has UNCOMMON rarity level
* XP Book tooltip is enhanced to show the book level
* XP Book and XP Bottles tooltip are updated to display a more vanillla-ish tooltip
* You can configure if you want them to show xp levels, xp points, or both
* XP Bottles without xp data don't show custom tooltip anymore

Fix loading error when number of xp book lowered