Improvements

• (Paged aliases #801) Aliases have been split out of the main settings file to allow for them to scale separately. Aliases from the old settings file should be ported seamlessly. You should now be able to have as many aliases as fit in memory (on the order of dozens is definitely safe).
• New backup/restore routes (and integration w/ UI) enables backing up both settings and aliases
• Versions of upstream libraries have been upgraded
• Version of core Arduino SDK has been upgraded
• Various compile warnings fixed
• Added wifi mode as a setting to wifi setup
• Small tweaks to HomeAssistant MQTT discovery payloads
• Move more strings into progmem to save flash