Update Car Intent Resolver UI

Bug: 329451873 (Hudson)
Bug: 329452468 (CW)
Test: Manual

Updates the UI across both Hudson and CW, adding a blurred background
and new styling to match Design System 2.0. The changes were made with car theming in mind, using “car-ified” widgets and car styles/attributes as much as possible.

Topic includes changes to:
- CarActivityResolver app
- frameworks/…/res car_resolver_list layouts
- frameworks/…/res build time base RRO (Hudson)
- frameworks/…/res build time RRO (CW on top of Hudson)

HSVs:
Hudson unselected (before):  https://hsv.googleplex.com/6608441803014144
Hudson selected (before):    https://hsv.googleplex.com/6729418717265920
Hudson preselected (before): https://hsv.googleplex.com/5858668019974144
Hudson unselected (after):   https://hsv.googleplex.com/5842426366263296
Hudson selected (after):     https://hsv.googleplex.com/5364547064954880
Hudson preselected (after):  https://hsv.googleplex.com/6455601056972800
CW unselected (before):      https://hsv.googleplex.com/6539239947763712
CW selected (before):        https://hsv.googleplex.com/4713227354112000
CW preselected (before):     https://hsv.googleplex.com/6722643641237504
CW unselected (after):       https://hsv.googleplex.com/6490446971797504
CW selected (after):         https://hsv.googleplex.com/4735209802039296
CW preselected (after):      https://hsv.googleplex.com/5959860402257920

Change-Id: Iebf04b8e8d81e4784ed33444c4077a5950f34dbb