feat(datapacks): add mc26 recipe tuning for copper chest, torches, and waystones

- Update recipe for copper chest to disable vanilla crafting
- Modify torch recipe to increase yield (8 torches per craft)
- Adjust warp stone recipe for Waystones mod (reduce ender pearl cost)
- Add pack.mcmeta for mc26 datapack compatibility
- Move recipe configurations to dedicated mc26 datapack folder
- Update documentation with manual tuning instructions

datapacks/m2621/data/minecraft/copper_chest.json

@@ -0,0 +1,7 @@
+{
+  "type": "minecraft:crafting_shapeless",
+  "ingredients": [
+    "minecraft:copper_ingot"
+  ],
+  "result": {"id": "minecraft:copper_chest", "count": 0}
+}