refactor: remove unused add function and related tests; update profile photo handling

- Deleted the `add` function and its test from the main script.
- Updated `ProfilePageAside`, `UserArticleFeed`, and other components to use `getFileUrl` for profile photo URLs.
- Changed profile photo field names in user models and inputs for consistency.
- Enhanced the `GeneralForm` to handle profile photo uploads with improved file handling.
- Updated the `ImageDropzoneWithCropper` component to work with the new file structure and handle uploads correctly.

Author: kingRayhan

next.config.mjs

@@ -41,6 +41,10 @@ const nextConfig = {
         protocol: "https",
         hostname: "api.dicebear.com",
       },
+      {
+        protocol: "https",
+        hostname: "cdn.techdiary.dev",
+      },
     ],
   },
 };