Make libapexutil available to microdroid_launcher

microdroid_launcher uses this to create linker namespace links to the
APEXes.

Bug: 391225143
Test: apply aosp/3455572, run `vm_shell.sh start-microdroid
--auto-connect -- --debug full`. Check if the following line is shown.

01-21 04:36:29.358    70    70 I microdroid_launcher: Linked APEX
namespace com_android_i18n with shared libs
libicui18n.so:libicuuc.so:libicu_jni.so:libandroidicu.so:libicu.so

Change-Id: Ie87c25b9031883cdf347c7b357293aab38f39872
1 file changed