SPIGOT-7355: More field renames and fixes

- Rename MapCursor Types to match their Minecraft names
- SPIGOT-7355: Rename ItemFlag#HIDE_POTION_EFFECTS to better reflect its function

By: DerFrZocker <derrieple@gmail.com>

paper-api/src/main/java/org/bukkit/inventory/ItemFlag.java

@@ -29,7 +29,7 @@ public enum ItemFlag {
      * Setting to show/hide potion effects, book and firework information, map
      * tooltips, patterns of banners, and enchantments of enchanted books.
      */
-    HIDE_POTION_EFFECTS,
+    HIDE_ADDITIONAL_TOOLTIP,
     /**
      * Setting to show/hide dyes from colored leather armor.
      */