fdo#82577: Handle Time

Put the TOOLS Time class in the tools namespace. Avoids clash with the X11
Time typedef.

Change-Id: Iac57d5aef35e81ace1ee0d5e6d76cb278f8ad866
Reviewed-on: https://gerrit.libreoffice.org/11684
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>
Tested-by: Noel Grandin <noelgrandin@gmail.com>