refactor(go): inline packages and drop unused dependencies

Replace external golang-packages config file with an inline array,
remove 6 unused packages (actionlint, antidot, gopls, templ, html2md,
pup), and update documentation to match cargo script style.

config/asdf/golang-packages

@@ -1,29 +0,0 @@
-// These are golang packages I use,
-// so they should be available with all versions
-
-// Git Profile allows you to switch between user profiles in git repos
-github.com/dotzero/git-profile@latest
-// An extensible command line tool or library to format yaml files.
-github.com/google/yamlfmt/cmd/yamlfmt@latest
-// Parsing HTML at the command line
-github.com/ericchiang/pup@latest
-// HTML to Markdown converter
-github.com/suntong/html2md@latest
-// cheat allows you to create and view interactive cheatsheets on the cli.
-github.com/cheat/cheat/cmd/cheat@latest
-// Render markdown on the CLI, with pizzazz! 💅
-github.com/charmbracelet/glow@latest
-// Static checker for GitHub Actions workflow files
-github.com/rhysd/actionlint/cmd/actionlint@latest
-// Cleans up your $HOME from those pesky dotfiles
-github.com/doron-cohen/antidot@latest
-// FZF is a general-purpose command-line fuzzy finder.
-github.com/junegunn/fzf@latest
-// gopls, the Go language server
-golang.org/x/tools/gopls@latest
-// A language for writing HTML user interfaces in Go.
-github.com/a-h/templ/cmd/templ@latest
-// A tool for glamorous shell scripts 🎀
-github.com/charmbracelet/gum@latest
-// A terminal session manager
-github.com/joshmedeski/sesh/v2@latest