Change `antidote` default path

[IronicUsername]

Goal
Have the path to antidote be flexible.

Context
When setting up a fresh instance of InstantOS i noticed that by default, the path to antidote was always searched under $zshhome/.antibody

Since antidote devs officially tell ppl you can either install it by pulling git into ${ZDOTDIR:-$HOME}/.antidote
OR
install via a package manager which in turn installs antidote in a different path.

so basically here

instantSHELL/zshrc

Lines 34 to 57 in c1d559a

	install_antidote_plugins() {
	echo "loading plugin bundle"
	[ -e "$HOME/.cache/zsh" ] || mkdir -p "$HOME/.cache/zsh"
	BUNDLEFILE="${BUNDLEFILE:-/usr/share/instantshell/bundle.txt}"
	# clone antidote if necessary and generate a static plugin file
	cloneantidote() {
	ANTIDOTEURL=/usr/share/instantshell/antidote
	[ -e "$ANTIDOTEURL" ] || ANTIDOTEURL=https://github.com/mattmc3/antidote.git
	git clone --depth=1 "$ANTIDOTEURL" $zhome/.antidote
	}
	if [[ ! $zhome/.zsh_plugins.zsh -nt $zhome/.zsh_plugins.txt ]]; then
	[[ -e $zhome/.antidote ]] || cloneantidote
	[[ -e $zhome/.zsh_plugins.txt ]] || touch $zhome/.zsh_plugins.txt
	(
	source $zhome/.antidote/antidote.zsh
	BUNDLESTUFF=$(cat "$BUNDLEFILE")
	if ! isinstantos
	then
	BUNDLESTUFF="$(grep -v instantos <<<"$BUNDLESTUFF")"
	fi
	antidote bundle <<<"$BUNDLESTUFF" >$zhome/.zsh_plugins.zsh
	)
	fi
	}

Tasks

• the .zshrc should:
  • check if antidote is ...
    • not installed,
      • install on system via git (maybe also following XDG Base Directory specs if possible...)
      • use it for the rest of the function
  • installed,
    • "find" the path of the installed version & use it