Add patches to implement Fairy type and Fairy gummies.

[ghost]

Add patches to implement the Fairy type:

• A patch to change the type match-up table implementation and add Fairy type as the "Neutral" (this replaces the old table with the 6th+ gens table) and all tables related to Gummi effects by type (IQ boosts/Belly recover).
• A patch to transform unused item 138 into a Fairy-type Gummi.

To create those patches, some new files have been created:

• Handler/Model/Writer for file "BALANCE/item_p.bin".
• A patch to extract Spinda bar's item list.
• Handler/Model/Writer for file "BALANCE/itembar.bin" (the file created by the patch mentioned in the previous point).

[Frostbyte0x70]

Could this cause issues when the patch isn't applied?

[theCapypara]

Probably not, since item # 138 isn't in any other category. It may cause slight issues when adding it to a floor before applying the patch, but the impact should be minimal. Could maybe add check to the UI, but idk if it's worth it.