add delete account UI and logic

lib/services/api/authentication_api.dart

@@ -83,4 +83,11 @@ class AuthenticationAPI {
     );
     return response;
   }
+
+  static Future<void> deleteAccount() async {
+    await HTTPService().delete(
+      path: ApiEndpoints.deleteProfile,
+      expectedResponseModel: (p0) {},
+    );
+  }
 }