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 a new `ForceToUseFakeDocument` property in `ApiOptions` to control whether the application uses a fake document for testing or bypasses certain conditions for document loading. Updated `ReportViewer.razor` to respect this configuration, including changes to conditional rendering logic and dependency injection for `IOptions<ApiOptions>`.
Removed test code that forced `EnvelopeKey` to `null` during initialization. Updated `appsettings.json` to include the new `ForceToUseFakeDocument` property with a default value of `true`. Added necessary `using` directives and dependencies for the updated functionality.
Added a new `ApiOptions` class to encapsulate API configuration,
including the `BaseUrl` property and `SectionName` constant.
Registered `ApiOptions` in the dependency injection container
in `Program.cs` and bound it to the "Api" section in the
configuration file. Updated `appsettings.json` to include the
"Api" section with a `BaseUrl` value of "https://localhost:8088".
