Ensure esphome directory exists on addon startup (#5464)

docker/ha-addon-rootfs/etc/s6-overlay/s6-rc.d/esphome/run

@@ -41,6 +41,8 @@ fi
 
 mkdir -p "${pio_cache_base}"
 
+mkdir -p /config/esphome
+
 if bashio::fs.directory_exists '/config/esphome/.esphome'; then
     bashio::log.info "Migrating old .esphome directory..."
     if bashio::fs.file_exists '/config/esphome/.esphome/esphome.json'; then