feat: add canonical URL handling and entity quality checks

- Implemented canonical URL strategies for city-specific domains and entities.
- Added helper functions for domain and city resolution.
- Created tests for canonical URL generation and domain resolution.
- Introduced entity quality checks for doctors and clinics to ensure meaningful content.
- Developed unique introductory texts for listing pages to avoid duplicate content.
- Established robots.txt policies for listing pages to manage indexing based on user filters.
- Enhanced specialty content with dynamic introductions and FAQs to improve SEO.

components/specialties/index.js

@@ -29,6 +29,7 @@ function SpecialtiesPage({ cityId, cityName, stateName }) {
   return (
     <>
       <HeadPageList
+        titleTag="p"
         title="تخصص مورد نظر شما چیست؟"
         detail="تخصص مورد نظرتان را جستجو کرده و یا از لیست زیر انتخاب نمایید:"
       >