[OneSearch] Add a new layout type for answer cards.

Bug: 204699454
Test: manual: https://screenshot.googleplex.com/B8Qhqi8Yf9dXCi7
Merged-In: I3ad0325fd0eb701d895eb6406b2726d671765c2e
Change-Id: I3ad0325fd0eb701d895eb6406b2726d671765c2e
1 file changed
tree: 294565f570976f383e13a896febd7ed3e5e55ca3
  1. iconloaderlib/
  2. searchuilib/