Read ApexMkInfo for modules to be installed.

This piggybacks onto the ApexInfo cquery handler, so we're issuing a
single bazel query call that reads two providers in the starlark expr.

Also rename requiredDeps to makeModulesToInstall to differentiate it from
APEX's required/provided libs in the apex manifest.

Test: unit test
Test: mkdiff
Fixes: 263123189
Change-Id: Ib7e43f1586f29864eee8627dba3631bfaff27afa