Make sapi::Status and sapi::StatusOr<> public in Bazel build file.
Make sapi::Status and sapi::StatusOr<> public in Bazel build file.

This makes it easier to work with the generated classes from client code.

PiperOrigin-RevId: 256132914
Change-Id: If7fb24a2cac998d2cdb04e8b627272064bf9793d

google/sandboxed-api,google/sandboxed-api,google/sandboxed-api,google/sandboxed-api