Added all nigiri classes, missing resources (lang and texture), removed NigiriBase food

src/main/resources/assets/sushi/lang/en_us.json

@@ -1,5 +1,7 @@
 {
+  "itemGroup.sushi.sushi_items": "Sushi Items",
+
   "item.sushi.avocado_fruit": "Avocado Fruit",
-  "item.sushi.nigiri_base": "Nigiri Base",
-  "itemGroup.sushi.sushi_items": "Sushi Items"
+  "item.sushi.nigiri_tuna": "Tuna Nigiri"
+  
 }

src/main/resources/assets/sushi/models/item/nigiri_tuna.json

@@ -1,6 +1,6 @@
 {
   "parent": "item/generated",
   "textures": {
-    "layer0": "sushi:item/nigiri_base"
+    "layer0": "sushi:item/nigiri_tuna"
   }
 }