Merge "[OneSearch] Add onesearch plugin api to trigger image from URL." into sc-v2-dev am: e9652c9a63

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/16134702

Change-Id: I202c60175d28cfe65239e137ad62f25e73b5d5ed