Add "fillets-ng" into package repository

[myself600]

Upstream have this game[1], but Arch ARM excludes it for some reason, possibly because of linking issues with lua51 (upstream manages to build it anyway). It does build on aarch64[2].

1. https://archlinux.org/packages/communit ... illets-ng/
2. https://pkgs.org/download/fillets-ng

[myself600]

I've submitted a pull request upstream, but it ended up being ignored due to x86_64 build reportedly working just fine:

https://bugs.archlinux.org/task/76569#comment213107
https://bugzilla.redhat.com/show_bug.cgi?id=2142381

Please merge this.