Add objectLinker to cmake_snapshot supported module types

Building with USE_HOST_MUSL=true adds dependencies on the musl
crt objects, which then fails analysis in cmake_snapshot.  Add
*objectLinker to the supported types.  The resulting snapshot
is unlikley to work, but at least analysis will pass.

Test: m USE_HOST_MUSL=true nothing
Bug: 190084016
Flag: EXEMPT bugfix
Change-Id: Ifa3858de78c6f3699eb902e968e431bbbc2ad3a8