Add @scality/cloudserverclient dev dependency

Issue: CLDSRV-868

Author: maeldonn

package.json

@@ -62,6 +62,7 @@
   },
   "devDependencies": {
     "@eslint/compat": "^1.2.2",
+    "@scality/cloudserverclient": "github:scality/cloudserverclient#improvement/CLDSRVCLT-10/user-metadata",
     "@scality/eslint-config-scality": "scality/Guidelines#8.3.0",
     "eslint": "^9.14.0",
     "eslint-plugin-import": "^2.31.0",