Manually generate #enchantable/*_armor tags

This will almost certainly be something that should be done automatically via datagen

src/main/resources/data/minecraft/tags/item/enchantable/chest_armor.json

@@ -0,0 +1,11 @@
+{
+  "replace": false,
+  "values": [
+    "betterend:thallasium_chestplate",
+    "betterend:terminite_chestplate",
+    "betterend:aeternium_chestplate",
+    "betterend:crystalite_chestplate",
+    "betterend:elytra_armored",
+    "betterend:elytra_crystalite"
+  ]
+}

src/main/resources/data/minecraft/tags/item/enchantable/foot_armor.json

@@ -0,0 +1,9 @@
+{
+  "replace": false,
+  "values": [
+    "betterend:thallasium_boots",
+    "betterend:terminite_boots",
+    "betterend:aeternium_boots",
+    "betterend:crystalite_boots"
+  ]
+}

src/main/resources/data/minecraft/tags/item/enchantable/head_armor.json

@@ -0,0 +1,9 @@
+{
+  "replace": false,
+  "values": [
+    "betterend:thallasium_helmet",
+    "betterend:terminite_helmet",
+    "betterend:aeternium_helmet",
+    "betterend:crystalite_helmet"
+  ]
+}

src/main/resources/data/minecraft/tags/item/enchantable/leg_armor.json

@@ -0,0 +1,9 @@
+{
+  "replace": false,
+  "values": [
+    "betterend:thallasium_leggings",
+    "betterend:terminite_leggings",
+    "betterend:aeternium_leggings",
+    "betterend:crystalite_leggings"
+  ]
+}