[REQUEST][ResponseOps] Add Alert panel inDashboard external docs

[tiamliu]

User flow

• Adding a new Alerting panel to a dashboard
• Edit the Alerting panel in a dashboard
• View alerts details from the alerting table
• View Rules details from the alerting table

References**
GH issue: elastic/kibana#197483
Wireframe : https://www.figma.com/design/c5FlBijdqWhJce2G9egO6j/New-Alert-panel-in-Dashboard--%3E--313?node-id=243-27879&p=f&t=K0ymd3OLpxxP4MWJ-0