Minor bugfix, syntax update.

• Bugfix in example notification automation
• Minor syntax updates
• Update required HA version to 2023.8

Update filter order, documentation.

• Updated order of filters in template.
• Updated README

Structure Change

Iterate group.unavailable_entities instead of states object.

Add rejected domains, update examples

v1.1

Merge branch 'main' of https://github.com/jazzyisj/unavailable-entiti…

v1.0

First release version.