Move apex module installation into Soong

Move apex module installation rules into Soong by overriding
InstallBypassMake.

Soong installs don't support post install commands, so move the
symlinks into separate rules and add dependencies on them.

Bug: 204136549
Test: m checkbuild
Change-Id: If65d283abc86f18ad266da0bf16fe95971a0bf9c