[IL21] Move the workaround utils to a better place.

...c/com/android/inputmethod/compat/AppWorkaroundsUtils.java

java/src/com/android/inputmethod/latin/InputAttributes.java

java/src/com/android/inputmethod/latin/LatinIME.java

.../com/android/inputmethod/latin/inputlogic/InputLogic.java

.../src/com/android/inputmethod/latin/settings/Settings.java

...om/android/inputmethod/latin/settings/SettingsValues.java

.../inputmethod/latin/utils/TargetPackageInfoGetterTask.java

...rc/com/android/inputmethod/latin/AppWorkaroundsTests.java

tests/src/com/android/inputmethod/latin/InputTestsBase.java