[FPS All-Sites UI] Add FPS info to site entry

This change adds first party set information to site entries by showing
which sites are owned by whom and the number of sites in such first
party set.

Bug: 1349370
Change-Id: Id21804daf703924125eed544ba0723ff359528d7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3859574


Commit-Queue: Mariam Ali <alimariam@google.com>
Reviewed-by: Theodore Olsauskas-Warren <sauski@google.com>
Cr-Commit-Position: refs/heads/main@{#1044509}