fdo#70422 Moved the linked files from sw/source/ui to a new core/uibase dir

Moved the files linked in sw/Library_sw.mk from sw/source/ui to
sw/source/core/uibase and modified the make files as per the new
directory location.

Reviewed on:
	https://gerrit.libreoffice.org/8447

Change-Id: I05f6ccdeee5e76fb0ae477d16721d9ddc6eaff32