[fix] Restore CJS & ESM build

package.json

@@ -28,14 +28,13 @@
   "bugs": {
     "url": "https://github.com/agentlab/sparql-jsld-client/issues"
   },
-  "main": "es/index.mjs",
-  "module": "es/index.mjs",
-  "typings": "es/index.mjs.d.ts",
+  "main": "dist/index.cjs.js",
+  "module": "dist/index.esm.js",
+  "typings": "dist/index.d.ts",
   "files": [
-    "es",
+    "dist",
     "src"
   ],
-  "type": "module",
   "engines": {
     "node": ">=22"
   },
@@ -87,6 +86,8 @@
   "devDependencies": {
     "@eslint/js": "^9.8.0",
     "@jest/globals": "^29.7.0",
+    "@rollup/plugin-babel": "^6.0.4",
+    "@rollup/plugin-commonjs": "^26.0.1",
     "@rollup/plugin-json": "6.1.0",
     "@rollup/plugin-node-resolve": "15.2.3",
     "@rollup/plugin-terser": "^0.4.4",
@@ -133,4 +134,4 @@
     "fs": false,
     "path": false
   }
-}
+}