Add some more properties to the bp2build APEX converter (second try)

In particular:

- AndroidManifest
- file_contexts
- key
- certificate
- min_sdk_version
- updatable
- installable
- native_shared_libs
- binaries

Test: Updated unit test

Change-Id: I1c6e8c4b6b24ce487f64e5d37bd594dbb000fe6f