added negative flint, steel and steel crafting

src/main/resources/assets/nec/models/item/negative_flint.json

@@ -0,0 +1,6 @@
+{
+    "parent": "minecraft:item/handheld",
+    "textures": {
+      "layer0": "nec:item/negative_flint"
+    }
+  }

src/main/resources/assets/nec/models/item/steel.json

@@ -0,0 +1,6 @@
+{
+    "parent": "minecraft:item/handheld",
+    "textures": {
+      "layer0": "nec:item/steel"
+    }
+  }

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

@@ -0,0 +1,14 @@
+{
+  "type": "minecraft:crafting_shapeless",
+  "ingredients": [
+    {
+      "item": "minecraft:flint_and_steel"
+    },
+    {
+      "item": "nec:negative_flint"
+    }
+  ],
+  "result": {
+    "item": "nec:steel"
+  }
+}