[freetype2] Add OWNERS file Add as owners the owners of the code that calls into this dependency. The OWNERS file is generated by `fx update-3p-owners`. Bug: 102810 Change-Id: I89c73854c25c9bb8d67dd146911d701583363d96 Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/freetype2/+/776965 Reviewed-by: Filip Filmar <fmil@google.com>