fix(nitro): nitro-codegen is now nitrogen

nitro-codegen is deprecated and is now nitrogen

Author: mfazekas

packages/create-react-native-library/templates/common/$package.json

@@ -49,7 +49,7 @@
 <% } -%>
     "prepare": "bob build",
 <% if (project.moduleConfig === 'nitro-modules' || project.viewConfig === 'nitro-view') { -%>
-    "nitrogen": "nitro-codegen",
+    "nitrogen": "nitrogen",
 <% } -%>
     "release": "release-it --only-version"
   },
@@ -92,7 +92,7 @@
     "eslint-plugin-prettier": "^5.5.4",
     "jest": "^29.7.0",
 <% if (project.moduleConfig === 'nitro-modules' || project.viewConfig === 'nitro-view') { -%>
-    "nitro-codegen": "^<%- versions.nitro %>",
+    "nitrogen": "^<%- versions.nitro %>",
 <% } -%>
     "prettier": "^3.6.2",
     "react": "19.1.0",