Validate update of vendor apex at install time

Bug: 254570732
Test: ApexdHostTest, ApexTestCases, libvintf_test, ApexServiceTestCases

Apexd performs an additional check on incoming vendor apexes,
using the VintfObject library to compatibility-check after
adding the vintf_fragment data from the incoming apex.

Change-Id: I94d842434fc0912beb2754c05878174ccde84433
13 files changed