UNO command SelectSentence / FN_SELECT_SENTENCE added
executing SelSentence()

Change-Id: Idcd528cf2915b30a59a9916dcff14d60d01dcd74
Reviewed-on: https://gerrit.libreoffice.org/70411
Tested-by: Jenkins
Reviewed-by: Maxim Monastirsky <momonasmon@gmail.com>
Tested-by: Maxim Monastirsky <momonasmon@gmail.com>