Check for module names in LOCAL_ADDITIONAL_DEPENDENCIES

If anything looks like a module name instead of a path (so if it doesn't
have a / in it), forbid it from being in LOCAL_ADDITIONAL_DEPENDENCIES.

Phony modules should not be dependencies, since they're never considered
clean, and will force rebuilds. It will also force installation when
we're only attempting to checkbuild. Most of the time
LOCAL_REQUIRED_MODULES should be used instead, which will trigger the
required modules to be installed if the local module is installed.

Bug: 68042065
Test: build/soong/build_test.bash on aosp and internal
Change-Id: I058ed6734d895eba3417b1d47c7f4a6b341bc137