pf-alert.md

@patternfly/elements
minor

Minor Changes

• Added pf-alert component for displaying alert messages of different types:
  • Types: info, warning, danger, success, cogear, neutral, custom
  • Features: optional heading, description, actions, dismiss button
• Enables consistent alert messaging across apps and demos

<pf-alert type="warning" heading="Attention!">
  This is a warning alert with optional description and actions.
</pf-alert>