IMPORTANT: I'm no longer playing WoW and I don't intend to come back anytime soon, so the development of my addons is halted. Sorry for the inconvenience.
Caravana will add a line to the Return to Camp spell button's tooltip, telling you where you last used the Make Camp racial Vulpera ability. No need to configure anything. It will also save this info across sessions.
Caravana will also add a map pin showing where you last camped.
Note: you must use the skill Make Camp after installing the addon for it to work.