zsh: automatic antidote setup

.config/zsh/plugins.zsh

@@ -70,6 +70,10 @@ fi
 [[ -z ${_my_plugins} ]] && return
 # If there are plugins not handled by the package manager, use antidote
 zstyle ':antidote:compatibility-mode' 'antibody' # TODO: switch to native mode
+if [[ ! -f ${ZDOTDIR}/.antidote/antidote.zsh ]]; then
+    git clone --depth=1 https://github.com/mattmc3/antidote.git ${ZDOTDIR}/.antidote
+fi
+source ${ZDOTDIR}/.antidote/antidote.zsh
 if command -v antidote > /dev/null; then
     zmodload zsh/stat
     zmodload zsh/datetime