Privacy Sandbox Settings: Set up 'site data' category page

Set up site data page. The UI follows the existing content setting
layout for binary settings. We can look into a radio button layout
later on.

Screenshot: https://crbug.com/1378703#c19
Bug: 1378703, b/254415173
Change-Id: I90e340bbbb9da5e89ac3a784d31d3282bd9f764d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4025930


Reviewed-by: Nicola Tommasi <tommasin@chromium.org>
Commit-Queue: Christian Dullweber <dullweber@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1072130}