Refactor handling of hidden API property provided information

In preparation for adding hidden API properties to individual
java_sdk_library modules this change refactors the handling of that
information.

1. Renames HiddenApiPackageProperties to HiddenAPIPackageProperties
   to be consistent with other similar structs.

2. Creates a new HiddenAPIPropertyInfo struct to be used to provide
   property derived information from one module to another. It includes
   both flag files as well as the information about which packages are
   used.

3. The HiddenAPIPropertyInfo is embedded within the existing
   HiddenAPIFlagInput in place of the existing flag files field.

4. The fields in the HiddenAPIPropertyInfo struct are populated from
   the HiddenAPI*Properties structs.

5. Access to package information is retrieved from the info struct
   instead of directly from the properties. That means that no changes
   will be needed to this code when info from other modules is merged
   into the struct in a follow up change.

Bug: 240406019
Test: packages/modules/common/build/mainline_modules_sdks.sh
      # Ran the previous command with and without this change to make
      # sure that this change does not change the sdk snapshot
      # contents.
Change-Id: I773279a4b621bcc3c40e3bfe193f2c7b0caeccd6