Add rotate text (text direction) of table cell

[iamsimakov]

Thank you for great project.
There is some fixes for text rotation of the docx table.
Description of available values textDirection : https://docs.microsoft.com/en-us/dotnet/api/documentformat.openxml.wordprocessing.textdirection?view=openxml-2.8.1
in brief it may be: tbRl or btLr