Refactor doctor name handling across the application

- Removed the "دکتر" prefix from doctor names in various components and API responses to ensure consistency and clarity.
- Updated the AppointmentDetailPage, CommentsPage, DashboardPage, RatingsPage, SecretariesPage, and other relevant files to reflect the changes in doctor name formatting.
- Adjusted API documentation to align with the new naming conventions.
- Implemented validation to prevent the creation of clinics without a name and restricted users to a single clinic.
- Added tests to verify that doctor names are stored without titles and that clinic creation adheres to the new validation rules.

assets/admin/pages/CommentsPage.tsx

@@ -62,7 +62,7 @@ export default function CommentsPage() {
       header: 'کاربر',
       render: (c) => <b>{c.patient_name}</b>,
     },
-    { key: 'doctor_name', header: 'پزشک', render: (c) => `دکتر ${c.doctor_name}` },
+    { key: 'doctor_name', header: 'پزشک', render: (c) => c.doctor_name },
     { key: 'title', header: 'عنوان' },
     {
       key: 'body',