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.

docs/api/appointment.md

@@ -236,7 +236,7 @@ Book an appointment slot.
   "success": true,
   "data": {
     "uuid": "appt-uuid-...",
-    "doctor": { "uuid": "...", "name": "دکتر علی احمدی" },
+    "doctor": { "uuid": "...", "name": "علی احمدی" },
     "user": { "uuid": "...", "mobile": "..." },
     "slot_start": 1718438400,
     "slot_end": 1718439600,
@@ -321,7 +321,7 @@ Get appointment detail.
     "uuid": "appt-uuid-...",
     "doctor": {
       "uuid": "...",
-      "name": "دکتر علی احمدی",
+      "name": "علی احمدی",
       "specialties": [
         { "uuid": "...", "name": "اورولوژی عمومی" }
       ]
@@ -435,7 +435,7 @@ Get all appointments for the authenticated user.
   "data": [
     {
       "uuid": "...",
-      "doctor": { "uuid": "...", "title": "دکتر علی احمدی" },
+      "doctor": { "uuid": "...", "title": "علی احمدی" },
       "slot_start": 1718438400,
       "slot_end": 1718439600,
       "status": "confirmed",