fix: add missing triggers for openresty-vhosts plugin

plugins/openresty-vhosts/post-delete

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+set -eo pipefail
+[[ $DOKKU_TRACE ]] && set -x
+source "$PLUGIN_CORE_AVAILABLE_PATH/common/property-functions"
+source "$PLUGIN_AVAILABLE_PATH/openresty-vhosts/functions"
+
+trigger-openresty-vhosts-post-delete() {
+  declare desc="openresty-vhosts post-delete trigger"
+  declare trigger="post-delete"
+  declare APP="$1"
+
+  fn-plugin-property-destroy "openresty" "$APP"
+  rm -rf "${DOKKU_LIB_ROOT}/data/openresty-vhosts/app-$APP"
+}
+
+trigger-openresty-vhosts-post-delete "$@"