Added option to have entities added to home assistant but disabled by default

[lucasnz]

Re-introduced date/time and day of week as disabled entities, so users can manually enable them if they desire.

Note: if the entities still exist in HA, they will stay enabled, the user can disable them if that is the desired outcome.

I have an automation that uses the date/time from the spa, and updates the time if it drifts too far... Also helpful for day light saving adjustments. I use this in my configuration.yaml to stop the HA logs from being spammed:

recorder:
  exclude:
    entities:
      - text.espa_date_time

logbook:
  exclude:
    entities:
      - text.espa_date_time

[lucasnz]

This is an update to this commit: 4141f14