Add keywords for search terms

A large update for search keywords collected from logging
and individual feedback.

At the moment, we don't have a great way to test that a keyword
matches to a search result. It's a bit akin to testing that the
wifi title is Wifi.

Fixes: 36983488
Fixes: 36622889
Fixes: 76115241
Test: Manual audit of keywords surfacing the proper results.
Change-Id: Ia1031b7f6ec1edfcc28c07e6b55049b8dac7c685

src/com/android/settings/wallpaper/WallpaperTypeSettings.java

@@ -118,6 +118,7 @@ public class WallpaperTypeSettings extends SettingsPreferenceFragment implements
                     data.intentAction = Intent.ACTION_SET_WALLPAPER;
                     data.intentTargetPackage = info.activityInfo.packageName;
                     data.intentTargetClass = info.activityInfo.name;
+                    data.keywords = context.getString(R.string.keywords_wallpaper);
                     result.add(data);
                 }