Making createInstance("com.sun.star.style.TableStyle") possible
Making SwXTextTableStyle a XNameAccess container of SwXTextCellStyles

Implementing basic SwXTextCellStyle

CellStyleMap based on svx/source/table/tabledesign.cxx

Change-Id: I5afff1f514582a63a6eb9f9fb44667665749855a
Reviewed-on: https://gerrit.libreoffice.org/25558Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>