fdo#75256 improving on existing icons and adding entries into links.txt

Change-Id: If2dee6f5df6dc3961fbd932b2982ecdaf210fc97
Reviewed-on: https://gerrit.libreoffice.org/13226
Reviewed-by: Yousuf Philips <philipz85@hotmail.com>
Tested-by: Yousuf Philips <philipz85@hotmail.com>