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/pack.mcmeta

@@ -0,0 +1,6 @@
+{
+    "pack": {
+        "pack_format": 61,
+        "description": "Tuning for mc26 build"
+    }
+}