message: docs: class-binding created as a separate task-based doc
  Class and style binding was pulled out of Attribute, class, and style
  binding doc and put in its own doc.
  Content edited with the assistance of the SME.
  Prerequisites and What's next sections were added.
  PR Close
diff: @@ -241,6 +241,7 @@ groups:
  'aio/content/guide/change-detection-slow-computations.md',
  'aio/content/guide/change-detection-skipping-subtrees.md',
  'aio/content/images/guide/change-detection/**',
  + 'aio/content/guide/class-binding.md',
  'aio/content/guide/cheatsheet.md',
  'aio/content/guide/component-interaction.md',
  'aio/content/examples/component-interaction/**',
  