When we run docviewer and call print, there is a problem with
the document preview (the document is converted to pdf format).
This happens because docviewer registers the interface name "BaseDocument",
and tiny-pdf-viewer does too.
 	The main reason for the renaming is that the interface type is
 registered globally. (without uri) qmlRegisterInterface<BaseDocument>("BaseDocument"))
 	And it is not enough to just change the register name, because
 PdfView has a property that uses a pointer of type BaseDocument, so we decide to rename it

Co-Authored-By: Kira Sagalakova <k.sagalakova@omp.ru>