Bashavara.com / Basavara.com — Laravel V9

Changes from V8:
- Added dedicated “জায়গা বিক্রয় / Land / Plot for Sale” category.
- Added land amount + unit fields: কাঠা, শতক, বিঘা, একর, sqft, sqm.
- Added optional English title and English description fields for advertisers.
- English/বাংলা language switch remains visible and prominent in header; Bengali remains default.
- Default contact/WhatsApp number: 01727993799.
- Added WhatsApp contact button on property details and footer contact area.
- V8 features retained.

Installation: run composer install, php artisan key:generate (if needed), php artisan migrate --seed, php artisan storage:link.

- Property search now also searches optional English title/description.
- Property posting category dropdown is populated from the full catalog, including the new land-sale category.
