chore: add a codemod to remove the @strapi/plugin-i18n dep from package.json

packages/utils/upgrade/resources/codemods/5.0.0/dependency-remove-strapi-plugin-i18n.json.ts

@@ -0,0 +1,31 @@
+import path from 'node:path';
+
+import type { modules } from '../../../dist';
+
+const STRAPI_I18N_DEP_NAME = '@strapi/plugin-i18n';
+const STRAPI_I18N_DEP_PATH = `dependencies.${STRAPI_I18N_DEP_NAME}`;
+
+/**
+ * Specifically targets the root package.json and removes the @strapi/plugin-i18n dependency.
+ *
+ * Why? The i18n plugin is now a hard dependency of @strapi/strapi and isn't needed in the package.json anymore.
+ */
+const transform: modules.runner.json.JSONTransform = (file, params) => {
+  const { cwd, json } = params;
+
+  const rootPackageJsonPath = path.join(cwd, 'package.json');
+
+  if (file.path !== rootPackageJsonPath) {
+    return file.json;
+  }
+
+  const j = json(file.json);
+
+  if (j.has(STRAPI_I18N_DEP_PATH)) {
+    j.remove(STRAPI_I18N_DEP_PATH);
+  }
+
+  return j.root();
+};
+
+export default transform;