The changes include:
* Remove the dependency on `date_time` package
* Update the code to use Dart's built-in `DateTime` class for formatting dates
* Update the code to use `toPersianDateStr` extension method for formatting dates as persian
* The changes are only in the `_MainPageGeneralItemState` class and specifically in the `getSubtitle` method.
OkaykOrhmn
Amir Hossein Mousavi
MohammadTaha Basiri