The `Type` property in `AnnotationCreateDto` was marked as obsolete with the note: "Not required for DevExpress."
Added `X` and `Y` properties to represent the horizontal and vertical positions of the signature field on the page. Both properties use DevExpress units (hundredths of an inch) with the origin at the top-left corner of the page.
Detailed documentation was added for `X` and `Y`, including differences in coordinate systems and unit conversions between DevExpress, PSPDFKit, and GDPicture.
Refactored the `AnnotationCreateDto` class:
- Changed `ElementId` from `int` to `long` and made it mutable.
- Marked `Name`, `Value`, and `Type` as `[Obsolete]` with defaults.
- Added `[Obsolete]` attributes to `Width` and `Height`.
- Introduced a new `Page` property to replace `SignatureDto`.
Updated `appsettings.json`:
- Set `Api.BaseUrl` to an empty string.
- Introduced AnnotationCreateDto for creation-specific properties
- AnnotationDto now inherits from AnnotationCreateDto and includes Id, AddedWhen, ChangedWhen, and ChangedWho
- Added Type property to AnnotationCreateDto
- remove CreateAnnotationCommand
