♻️ refactor: Refactor API endpoints to use dynamic API prefix from environment variables

- Updated all service files to replace hardcoded API paths with `${import.meta.env.VITE_API_PREFIX}` for better configurability.
- Ensured consistency across user, common, and gateway services by applying the new API prefix format.
- Removed unnecessary comments and maintained ESLint disable directives where applicable.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "frontend",
-  "version": "1.2.0-dev.1",
+  "version": "1.2.0",
   "private": true,
   "homepage": "https://github.com/perfect-panel/frontend",
   "bugs": {