- uses makepkg and a generated PKGBUILD file
- integrated with the debian installer, renamed script
- all packages now end up in build/packages/

rather than overcomplicating the script

as this is more reflective of what it's doing, "build/release" should
build all the bins, and then all the various distribution packages too,
probably putting them under dist/

in future the arch/deb package config files will be moved there too

Arch package

- binaries are now versioned like the OS packages
- added tarballs that contain the binary, LICENSE and manpage
- write all binaries, OS packages & tarballs to dist/, i.e.

../dist/
├── bin
│   ├── pokesay-0.18.1-android-arm64
│   ├── pokesay-0.18.1-darwin-amd64
│   ├── pokesay-0.18.1-darwin-arm64
│   ├── pokesay-0.18.1-linux-amd64
│   └── pokesay-0.18.1-windows-amd64.exe
├── packages
│   ├── pokesay-0.18.1-1-x86_64.pkg.tar.zst
│   ├── pokesay-0.18.1-android-arm64.deb
│   ├── pokesay-0.18.1-linux-amd64.deb
│   └── pokesay-debug-0.18.1-1-x86_64.pkg.tar.zst
└── tarballs
    └── pokesay-0.18.1-linux-amd64.tar.gz

This now requires running the build task with a VERSION:
VERSION=0.18.1 make build/bin build/packages

These files can then all be uploaded as part of a release.

Then, afterward, the binaries/tarballs can be referenced in AUR and
homebrew packages.

Dist output