added cobble gen crafting recipe for stone sword

src/main/resources/data/nec/recipes/stone_sword.json

@@ -0,0 +1,22 @@
+{
+  "type": "minecraft:crafting_shaped",
+  "pattern": [
+    "A B",
+    "A B",
+    " C "
+  ],
+  "key": {
+    "A": {
+      "item": "minecraft:lava_bucket"
+    },
+    "B": {
+      "item": "minecraft:water_bucket"
+    },
+    "C": {
+      "item": "minecraft:stick"
+    }
+  },
+  "result": {
+    "item": "minecraft:stone_sword"
+  }
+}