fix(release): ship LICENSE + README in the tarballs The AUR PKGBUILD installs LICENSE and README.md out of the release tarball, but upload-rust-binary-action does not include them by default — the v0.1.0 tarball held only the binary, so makepkg would have failed for anyone running `paru -S d9cker-bin`. Add `include: LICENSE,README.md`. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>