Android: Add support for "prefab" to android_aar_prebuilt()

E.g. for:
android_aar_prebuilt("foo_java") {
}

This will create a source_set names "foo_java_headers", which will have
a public_configs for "foo_java_include_dirs_config", which will set
include_dirs to the path to the extracted header files.

This does not change how .so file are handled. These must still be
manually wired up to be included in .apk files.

Bug: 396383602
Change-Id: I4a1c5dbb2ab056fcf26b93ab3e70409fa8a60ef5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6269640
Reviewed-by: Sam Maier <smaier@chromium.org>
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1420688}