629c0d51b2
- Added XML documentation to the `Handle` method in `UpdateEmailTemplateCommandHandler`. - Improved readability in `ReadEmailTemplateQueryHandler` by storing the mapped response in a variable. - Updated properties in `ReadEmailTemplateResponse` to be mutable and renamed `Type` to `Name` with a type change from `int` to `string`. - Added data annotations in `EmailTemplate` for `AddedWhen` and introduced a new nullable `ChangedWhen` property. - Included necessary using directives for data annotations in `EmailTemplate.cs`.