[zsh] Enable command line editing in vim

Needs vim-mode enabled for zsh (which it is in this zshrc). When in
normal mode press <space> to move the current command into vim and edit
it.

zsh/.config/zsh/.zshrc

@@ -31,7 +31,8 @@ source /usr/share/oh-my-zsh/plugins/colored-man-pages/colored-man-pages.plugin.z
 source /usr/share/oh-my-zsh/plugins/command-not-found/command-not-found.plugin.zsh
 source /usr/share/nvm/init-nvm.sh
 
-autoload -Uz compinit zmv
+# load completion, extended zsh moving syntax, zle edit in vim (or other $EDITOR) possibility
+autoload -Uz compinit zmv edit-command-line
 compinit
 
 # shellcheck source=alias
@@ -129,6 +130,10 @@ bindkey '^N' down-line-or-history
 # search history backwards <c-r>
 bindkey '^r' history-incremental-search-backward
 
+# Send command to editor and back for execution
+zle -N edit-command-line
+bindkey -M vicmd ' ' edit-command-line
+
 # Deduplicate PATH - remove any duplicate entries from PATH
 # from: https://unix.stackexchange.com/questions/40749/remove-duplicate-path-entries-with-awk-command
 get_var() {