ci: simplify GitHub actions

emacs-unlimited-select: only build on darwin without assert

Create GitHub actions workflow

remove unnecessary rec

evaluate flake on aarch64-darwin

emacs-unlimited-select: init as override of pkgs.emacs

fix path to ci push

ci: push to binary cache

enchant-configurable: init at 2.6.9

fix htmlformat

htmlformat: init at unstable-2023-11-08

add build manifest for builds.sr.ht

update README

prettier-plugin-go-template: init at 0.0.15

initial commit