Move SettingsLib tests and EasterEgg to aapt2.

Test: make -j SettingsLibTests
Change-Id: I38fbd6af7eb5707d76fb930b4d685e30b26f45de
Merged-In: I38fbd6af7eb5707d76fb930b4d685e30b26f45de
(cherry picked from commit 41df109aca81726554d2aedf4ebea6c98f663273)
3 files changed