Move icon resources into SettingsLib for phone buddy

The external settings api needs to pass icons for
corresponding settings. The following signals didn't have
icons in Settings.
- Night display
- Location

Bug: 62706782
Test: make RunSettingsGoogleRoboTests
Change-Id: Ia2feaa9cfea7dbce165545e5b7d96ad0798b8e07
diff --git a/packages/SystemUI/res/drawable/ic_qs_night_display_on.xml b/packages/SettingsLib/res/drawable/ic_qs_night_display_on.xml
similarity index 100%
rename from packages/SystemUI/res/drawable/ic_qs_night_display_on.xml
rename to packages/SettingsLib/res/drawable/ic_qs_night_display_on.xml
diff --git a/packages/SystemUI/res/drawable/ic_signal_location.xml b/packages/SettingsLib/res/drawable/ic_signal_location.xml
similarity index 100%
rename from packages/SystemUI/res/drawable/ic_signal_location.xml
rename to packages/SettingsLib/res/drawable/ic_signal_location.xml