Add icon pack overlays for Settings homepage icons.

All of these icons are tinted white, just like the ones
they are overlaying. TODO overlay the icons that are not
tinted white (e.g. tinting colorControlNormal) or black.

Bug: 123829919
Test: adb shell cmd overlay enable-exclusive --user 0 com.android.theme.icon_pack.{circular,filled,rounded}.settings
Change-Id: I1189b7b2f152ff2e6523f9156543ffc2ff8c9396